21940620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1223}}^1$

素因数の和:1271

約数の個数: 96

約数和(自身を含む): 69092352

約数和(自身を除く): 47151732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 23, 26, 30, 39, 46, 52, 60, 65, 69, 78, 92, 115, 130, 138, 156, 195, 230, 260, 276, 299, 345, 390, 460, 598, 690, 780, 897, 1196, 1223, 1380, 1495, 1794, 2446, 2990, 3588, 3669, 4485, 4892, 5980, 6115, 7338, 8970, 12230, 14676, 15899, 17940, 18345, 24460, 28129, 31798, 36690, 47697, 56258, 63596, 73380, 79495, 84387, 95394, 112516, 140645, 158990, 168774, 190788, 238485, 281290, 317980, 337548, 365677, 421935, 476970, 562580, 731354, 843870, 953940, 1097031, 1462708, 1687740, 1828385, 2194062, 3656770, 4388124, 5485155, 7313540, 10970310, 21940620]

約数ペア:

[(1, 21940620), (2, 10970310), (3, 7313540), (4, 5485155), (5, 4388124), (6, 3656770), (10, 2194062), (12, 1828385), (13, 1687740), (15, 1462708), (20, 1097031), (23, 953940), (26, 843870), (30, 731354), (39, 562580), (46, 476970), (52, 421935), (60, 365677), (65, 337548), (69, 317980), (78, 281290), (92, 238485), (115, 190788), (130, 168774), (138, 158990), (156, 140645), (195, 112516), (230, 95394), (260, 84387), (276, 79495), (299, 73380), (345, 63596), (390, 56258), (460, 47697), (598, 36690), (690, 31798), (780, 28129), (897, 24460), (1196, 18345), (1223, 17940), (1380, 15899), (1495, 14676), (1794, 12230), (2446, 8970), (2990, 7338), (3588, 6115), (3669, 5980), (4485, 4892)]