20856281040

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{56687}}^1$

素因数の和:56786

約数の個数: 240

約数和(自身を含む): 81146377728

約数和(自身を除く): 60290096688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 73, 80, 84, 90, 105, 112, 120, 126, 140, 144, 146, 168, 180, 210, 219, 240, 252, 280, 292, 315, 336, 360, 365, 420, 438, 504, 511, 560, 584, 630, 657, 720, 730, 840, 876, 1008, 1022, 1095, 1168, 1260, 1314, 1460, 1533, 1680, 1752, 2044, 2190, 2520, 2555, 2628, 2920, 3066, 3285, 3504, 4088, 4380, 4599, 5040, 5110, 5256, 5840, 6132, 6570, 7665, 8176, 8760, 9198, 10220, 10512, 12264, 13140, 15330, 17520, 18396, 20440, 22995, 24528, 26280, 30660, 36792, 40880, 45990, 52560, 56687, 61320, 73584, 91980, 113374, 122640, 170061, 183960, 226748, 283435, 340122, 367920, 396809, 453496, 510183, 566870, 680244, 793618, 850305, 906992, 1020366, 1133740, 1190427, 1360488, 1587236, 1700610, 1984045, 2040732, 2267480, 2380854, 2550915, 2720976, 3174472, 3401220, 3571281, 3968090, 4081464, 4138151, 4534960, 4761708, 5101830, 5952135, 6348944, 6802440, 7142562, 7936180, 8162928, 8276302, 9523416, 10203660, 11904270, 12414453, 13604880, 14285124, 15872360, 16552604, 17856405, 19046832, 20407320, 20690755, 23808540, 24828906, 28570248, 28967057, 31744720, 33105208, 35712810, 37243359, 40814640, 41381510, 47617080, 49657812, 57140496, 57934114, 62072265, 66210416, 71425620, 74486718, 82763020, 86901171, 95234160, 99315624, 115868228, 124144530, 142851240, 144835285, 148973436, 165526040, 173802342, 186216795, 198631248, 231736456, 248289060, 260703513, 285702480, 289670570, 297946872, 331052080, 347604684, 372433590, 434505855, 463472912, 496578120, 521407026, 579341140, 595893744, 695209368, 744867180, 869011710, 993156240, 1042814052, 1158682280, 1303517565, 1390418736, 1489734360, 1738023420, 2085628104, 2317364560, 2607035130, 2979468720, 3476046840, 4171256208, 5214070260, 6952093680, 10428140520, 20856281040]

約数ペア:

[(1, 20856281040), (2, 10428140520), (3, 6952093680), (4, 5214070260), (5, 4171256208), (6, 3476046840), (7, 2979468720), (8, 2607035130), (9, 2317364560), (10, 2085628104), (12, 1738023420), (14, 1489734360), (15, 1390418736), (16, 1303517565), (18, 1158682280), (20, 1042814052), (21, 993156240), (24, 869011710), (28, 744867180), (30, 695209368), (35, 595893744), (36, 579341140), (40, 521407026), (42, 496578120), (45, 463472912), (48, 434505855), (56, 372433590), (60, 347604684), (63, 331052080), (70, 297946872), (72, 289670570), (73, 285702480), (80, 260703513), (84, 248289060), (90, 231736456), (105, 198631248), (112, 186216795), (120, 173802342), (126, 165526040), (140, 148973436), (144, 144835285), (146, 142851240), (168, 124144530), (180, 115868228), (210, 99315624), (219, 95234160), (240, 86901171), (252, 82763020), (280, 74486718), (292, 71425620), (315, 66210416), (336, 62072265), (360, 57934114), (365, 57140496), (420, 49657812), (438, 47617080), (504, 41381510), (511, 40814640), (560, 37243359), (584, 35712810), (630, 33105208), (657, 31744720), (720, 28967057), (730, 28570248), (840, 24828906), (876, 23808540), (1008, 20690755), (1022, 20407320), (1095, 19046832), (1168, 17856405), (1260, 16552604), (1314, 15872360), (1460, 14285124), (1533, 13604880), (1680, 12414453), (1752, 11904270), (2044, 10203660), (2190, 9523416), (2520, 8276302), (2555, 8162928), (2628, 7936180), (2920, 7142562), (3066, 6802440), (3285, 6348944), (3504, 5952135), (4088, 5101830), (4380, 4761708), (4599, 4534960), (5040, 4138151), (5110, 4081464), (5256, 3968090), (5840, 3571281), (6132, 3401220), (6570, 3174472), (7665, 2720976), (8176, 2550915), (8760, 2380854), (9198, 2267480), (10220, 2040732), (10512, 1984045), (12264, 1700610), (13140, 1587236), (15330, 1360488), (17520, 1190427), (18396, 1133740), (20440, 1020366), (22995, 906992), (24528, 850305), (26280, 793618), (30660, 680244), (36792, 566870), (40880, 510183), (45990, 453496), (52560, 396809), (56687, 367920), (61320, 340122), (73584, 283435), (91980, 226748), (113374, 183960), (122640, 170061)]