20740390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{461}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 40914720

約数和(自身を除く): 20174330

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 409, 461, 818, 922, 2045, 2305, 4090, 4499, 4610, 5071, 8998, 10142, 22495, 25355, 44990, 50710, 188549, 377098, 942745, 1885490, 2074039, 4148078, 10370195, 20740390]

約数ペア:

[(1, 20740390), (2, 10370195), (5, 4148078), (10, 2074039), (11, 1885490), (22, 942745), (55, 377098), (110, 188549), (409, 50710), (461, 44990), (818, 25355), (922, 22495), (2045, 10142), (2305, 8998), (4090, 5071), (4499, 4610)]