20397535

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7741}}^1$

素因数の和:7794

約数の個数: 16

約数和(自身を含む): 26756352

約数和(自身を除く): 6358817

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7741, 38705, 131597, 239971, 657985, 1199855, 4079507, 20397535]

約数ペア:

[(1, 20397535), (5, 4079507), (17, 1199855), (31, 657985), (85, 239971), (155, 131597), (527, 38705), (2635, 7741)]