20820926880

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123581}}^1$

素因数の和:123621

約数の個数: 240

約数和(自身を含む): 79133509224

約数和(自身を除く): 58312582344

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 81, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 162, 180, 195, 208, 216, 234, 240, 260, 270, 288, 312, 324, 351, 360, 390, 405, 416, 432, 468, 480, 520, 540, 585, 624, 648, 702, 720, 780, 810, 864, 936, 1040, 1053, 1080, 1170, 1248, 1296, 1404, 1440, 1560, 1620, 1755, 1872, 2080, 2106, 2160, 2340, 2592, 2808, 3120, 3240, 3510, 3744, 4212, 4320, 4680, 5265, 5616, 6240, 6480, 7020, 8424, 9360, 10530, 11232, 12960, 14040, 16848, 18720, 21060, 28080, 33696, 42120, 56160, 84240, 123581, 168480, 247162, 370743, 494324, 617905, 741486, 988648, 1112229, 1235810, 1482972, 1606553, 1853715, 1977296, 2224458, 2471620, 2965944, 3213106, 3336687, 3707430, 3954592, 4448916, 4819659, 4943240, 5561145, 5931888, 6426212, 6673374, 7414860, 8032765, 8897832, 9639318, 9886480, 10010061, 11122290, 11863776, 12852424, 13346748, 14458977, 14829720, 16065530, 16683435, 17795664, 19278636, 19772960, 20020122, 22244580, 24098295, 25704848, 26693496, 28917954, 29659440, 32131060, 33366870, 35591328, 38557272, 40040244, 43376931, 44489160, 48196590, 50050305, 51409696, 53386992, 57835908, 59318880, 64262120, 66733740, 72294885, 77114544, 80080488, 86753862, 88978320, 96393180, 100100610, 106773984, 115671816, 128524240, 130130793, 133467480, 144589770, 154229088, 160160976, 173507724, 177956640, 192786360, 200201220, 216884655, 231343632, 257048480, 260261586, 266934960, 289179540, 320321952, 347015448, 385572720, 400402440, 433769310, 462687264, 520523172, 533869920, 578359080, 650653965, 694030896, 771145440, 800804880, 867538620, 1041046344, 1156718160, 1301307930, 1388061792, 1601609760, 1735077240, 2082092688, 2313436320, 2602615860, 3470154480, 4164185376, 5205231720, 6940308960, 10410463440, 20820926880]

約数ペア:

[(1, 20820926880), (2, 10410463440), (3, 6940308960), (4, 5205231720), (5, 4164185376), (6, 3470154480), (8, 2602615860), (9, 2313436320), (10, 2082092688), (12, 1735077240), (13, 1601609760), (15, 1388061792), (16, 1301307930), (18, 1156718160), (20, 1041046344), (24, 867538620), (26, 800804880), (27, 771145440), (30, 694030896), (32, 650653965), (36, 578359080), (39, 533869920), (40, 520523172), (45, 462687264), (48, 433769310), (52, 400402440), (54, 385572720), (60, 347015448), (65, 320321952), (72, 289179540), (78, 266934960), (80, 260261586), (81, 257048480), (90, 231343632), (96, 216884655), (104, 200201220), (108, 192786360), (117, 177956640), (120, 173507724), (130, 160160976), (135, 154229088), (144, 144589770), (156, 133467480), (160, 130130793), (162, 128524240), (180, 115671816), (195, 106773984), (208, 100100610), (216, 96393180), (234, 88978320), (240, 86753862), (260, 80080488), (270, 77114544), (288, 72294885), (312, 66733740), (324, 64262120), (351, 59318880), (360, 57835908), (390, 53386992), (405, 51409696), (416, 50050305), (432, 48196590), (468, 44489160), (480, 43376931), (520, 40040244), (540, 38557272), (585, 35591328), (624, 33366870), (648, 32131060), (702, 29659440), (720, 28917954), (780, 26693496), (810, 25704848), (864, 24098295), (936, 22244580), (1040, 20020122), (1053, 19772960), (1080, 19278636), (1170, 17795664), (1248, 16683435), (1296, 16065530), (1404, 14829720), (1440, 14458977), (1560, 13346748), (1620, 12852424), (1755, 11863776), (1872, 11122290), (2080, 10010061), (2106, 9886480), (2160, 9639318), (2340, 8897832), (2592, 8032765), (2808, 7414860), (3120, 6673374), (3240, 6426212), (3510, 5931888), (3744, 5561145), (4212, 4943240), (4320, 4819659), (4680, 4448916), (5265, 3954592), (5616, 3707430), (6240, 3336687), (6480, 3213106), (7020, 2965944), (8424, 2471620), (9360, 2224458), (10530, 1977296), (11232, 1853715), (12960, 1606553), (14040, 1482972), (16848, 1235810), (18720, 1112229), (21060, 988648), (28080, 741486), (33696, 617905), (42120, 494324), (56160, 370743), (84240, 247162), (123581, 168480)]