21371880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{739}}^1$

素因数の和:994

約数の個数: 64

約数和(自身を含む): 64468800

約数和(自身を除く): 43096920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 241, 482, 723, 739, 964, 1205, 1446, 1478, 1928, 2217, 2410, 2892, 2956, 3615, 3695, 4434, 4820, 5784, 5912, 7230, 7390, 8868, 9640, 11085, 14460, 14780, 17736, 22170, 28920, 29560, 44340, 88680, 178099, 356198, 534297, 712396, 890495, 1068594, 1424792, 1780990, 2137188, 2671485, 3561980, 4274376, 5342970, 7123960, 10685940, 21371880]

約数ペア:

[(1, 21371880), (2, 10685940), (3, 7123960), (4, 5342970), (5, 4274376), (6, 3561980), (8, 2671485), (10, 2137188), (12, 1780990), (15, 1424792), (20, 1068594), (24, 890495), (30, 712396), (40, 534297), (60, 356198), (120, 178099), (241, 88680), (482, 44340), (723, 29560), (739, 28920), (964, 22170), (1205, 17736), (1446, 14780), (1478, 14460), (1928, 11085), (2217, 9640), (2410, 8868), (2892, 7390), (2956, 7230), (3615, 5912), (3695, 5784), (4434, 4820)]