215156680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101489}}^1$

素因数の和:101553

約数の個数: 32

約数和(自身を含む): 493241400

約数和(自身を除く): 278084720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 101489, 202978, 405956, 507445, 811912, 1014890, 2029780, 4059560, 5378917, 10757834, 21515668, 26894585, 43031336, 53789170, 107578340, 215156680]

約数ペア:

[(1, 215156680), (2, 107578340), (4, 53789170), (5, 43031336), (8, 26894585), (10, 21515668), (20, 10757834), (40, 5378917), (53, 4059560), (106, 2029780), (212, 1014890), (265, 811912), (424, 507445), (530, 405956), (1060, 202978), (2120, 101489)]