20897075

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 26846496

約数和(自身を除く): 5949421

約数列:

[1, 5, 25, 61, 71, 193, 305, 355, 965, 1525, 1775, 4331, 4825, 11773, 13703, 21655, 58865, 68515, 108275, 294325, 342575, 835883, 4179415, 20897075]

約数ペア:

[(1, 20897075), (5, 4179415), (25, 835883), (61, 342575), (71, 294325), (193, 108275), (305, 68515), (355, 58865), (965, 21655), (1525, 13703), (1775, 11773), (4331, 4825)]