20121420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{709}}^1$

素因数の和:775

約数の個数: 96

約数和(自身を含む): 62979840

約数和(自身を除く): 42858420

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 43, 44, 55, 60, 66, 86, 110, 129, 132, 165, 172, 215, 220, 258, 330, 430, 473, 516, 645, 660, 709, 860, 946, 1290, 1418, 1419, 1892, 2127, 2365, 2580, 2836, 2838, 3545, 4254, 4730, 5676, 7090, 7095, 7799, 8508, 9460, 10635, 14180, 14190, 15598, 21270, 23397, 28380, 30487, 31196, 38995, 42540, 46794, 60974, 77990, 91461, 93588, 116985, 121948, 152435, 155980, 182922, 233970, 304870, 335357, 365844, 457305, 467940, 609740, 670714, 914610, 1006071, 1341428, 1676785, 1829220, 2012142, 3353570, 4024284, 5030355, 6707140, 10060710, 20121420]

約数ペア:

[(1, 20121420), (2, 10060710), (3, 6707140), (4, 5030355), (5, 4024284), (6, 3353570), (10, 2012142), (11, 1829220), (12, 1676785), (15, 1341428), (20, 1006071), (22, 914610), (30, 670714), (33, 609740), (43, 467940), (44, 457305), (55, 365844), (60, 335357), (66, 304870), (86, 233970), (110, 182922), (129, 155980), (132, 152435), (165, 121948), (172, 116985), (215, 93588), (220, 91461), (258, 77990), (330, 60974), (430, 46794), (473, 42540), (516, 38995), (645, 31196), (660, 30487), (709, 28380), (860, 23397), (946, 21270), (1290, 15598), (1418, 14190), (1419, 14180), (1892, 10635), (2127, 9460), (2365, 8508), (2580, 7799), (2836, 7095), (2838, 7090), (3545, 5676), (4254, 4730)]