20643542640

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{99901}}^1$

素因数の和:99968

約数の個数: 240

約数和(自身を含む): 81165180096

約数和(自身を除く): 60521637456

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, 41, 42, 45, 48, 56, 60, 63, 70, 72, 80, 82, 84, 90, 105, 112, 120, 123, 126, 140, 144, 164, 168, 180, 205, 210, 240, 246, 252, 280, 287, 315, 328, 336, 360, 369, 410, 420, 492, 504, 560, 574, 615, 630, 656, 720, 738, 820, 840, 861, 984, 1008, 1148, 1230, 1260, 1435, 1476, 1640, 1680, 1722, 1845, 1968, 2296, 2460, 2520, 2583, 2870, 2952, 3280, 3444, 3690, 4305, 4592, 4920, 5040, 5166, 5740, 5904, 6888, 7380, 8610, 9840, 10332, 11480, 12915, 13776, 14760, 17220, 20664, 22960, 25830, 29520, 34440, 41328, 51660, 68880, 99901, 103320, 199802, 206640, 299703, 399604, 499505, 599406, 699307, 799208, 899109, 999010, 1198812, 1398614, 1498515, 1598416, 1798218, 1998020, 2097921, 2397624, 2797228, 2997030, 3496535, 3596436, 3996040, 4095941, 4195842, 4495545, 4795248, 5594456, 5994060, 6293763, 6993070, 7192872, 7992080, 8191882, 8391684, 8991090, 10489605, 11188912, 11988120, 12287823, 12587526, 13986140, 14385744, 16383764, 16783368, 17982180, 20479705, 20979210, 23976240, 24575646, 25175052, 27972280, 28671587, 31468815, 32767528, 33566736, 35964360, 36863469, 40959410, 41958420, 49151292, 50350104, 55944560, 57343174, 61439115, 62937630, 65535056, 71928720, 73726938, 81918820, 83916840, 86014761, 98302584, 100700208, 114686348, 122878230, 125875260, 143357935, 147453876, 163837640, 167833680, 172029522, 184317345, 196605168, 229372696, 245756460, 251750520, 258044283, 286715870, 294907752, 327675280, 344059044, 368634690, 430073805, 458745392, 491512920, 503501040, 516088566, 573431740, 589815504, 688118088, 737269380, 860147610, 983025840, 1032177132, 1146863480, 1290221415, 1376236176, 1474538760, 1720295220, 2064354264, 2293726960, 2580442830, 2949077520, 3440590440, 4128708528, 5160885660, 6881180880, 10321771320, 20643542640]

約数ペア:

[(1, 20643542640), (2, 10321771320), (3, 6881180880), (4, 5160885660), (5, 4128708528), (6, 3440590440), (7, 2949077520), (8, 2580442830), (9, 2293726960), (10, 2064354264), (12, 1720295220), (14, 1474538760), (15, 1376236176), (16, 1290221415), (18, 1146863480), (20, 1032177132), (21, 983025840), (24, 860147610), (28, 737269380), (30, 688118088), (35, 589815504), (36, 573431740), (40, 516088566), (41, 503501040), (42, 491512920), (45, 458745392), (48, 430073805), (56, 368634690), (60, 344059044), (63, 327675280), (70, 294907752), (72, 286715870), (80, 258044283), (82, 251750520), (84, 245756460), (90, 229372696), (105, 196605168), (112, 184317345), (120, 172029522), (123, 167833680), (126, 163837640), (140, 147453876), (144, 143357935), (164, 125875260), (168, 122878230), (180, 114686348), (205, 100700208), (210, 98302584), (240, 86014761), (246, 83916840), (252, 81918820), (280, 73726938), (287, 71928720), (315, 65535056), (328, 62937630), (336, 61439115), (360, 57343174), (369, 55944560), (410, 50350104), (420, 49151292), (492, 41958420), (504, 40959410), (560, 36863469), (574, 35964360), (615, 33566736), (630, 32767528), (656, 31468815), (720, 28671587), (738, 27972280), (820, 25175052), (840, 24575646), (861, 23976240), (984, 20979210), (1008, 20479705), (1148, 17982180), (1230, 16783368), (1260, 16383764), (1435, 14385744), (1476, 13986140), (1640, 12587526), (1680, 12287823), (1722, 11988120), (1845, 11188912), (1968, 10489605), (2296, 8991090), (2460, 8391684), (2520, 8191882), (2583, 7992080), (2870, 7192872), (2952, 6993070), (3280, 6293763), (3444, 5994060), (3690, 5594456), (4305, 4795248), (4592, 4495545), (4920, 4195842), (5040, 4095941), (5166, 3996040), (5740, 3596436), (5904, 3496535), (6888, 2997030), (7380, 2797228), (8610, 2397624), (9840, 2097921), (10332, 1998020), (11480, 1798218), (12915, 1598416), (13776, 1498515), (14760, 1398614), (17220, 1198812), (20664, 999010), (22960, 899109), (25830, 799208), (29520, 699307), (34440, 599406), (41328, 499505), (51660, 399604), (68880, 299703), (99901, 206640), (103320, 199802)]