20439575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1115

約数の個数: 24

約数和(自身を含む): 27769056

約数和(自身を除く): 7329481

約数列:

[1, 5, 13, 25, 61, 65, 305, 325, 793, 1031, 1525, 3965, 5155, 13403, 19825, 25775, 62891, 67015, 314455, 335075, 817583, 1572275, 4087915, 20439575]

約数ペア:

[(1, 20439575), (5, 4087915), (13, 1572275), (25, 817583), (61, 335075), (65, 314455), (305, 67015), (325, 62891), (793, 25775), (1031, 19825), (1525, 13403), (3965, 5155)]