20883655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 28748160

約数和(自身を除く): 7864505

約数列:

[1, 5, 13, 23, 61, 65, 115, 229, 299, 305, 793, 1145, 1403, 1495, 2977, 3965, 5267, 7015, 13969, 14885, 18239, 26335, 68471, 69845, 91195, 181597, 321287, 342355, 907985, 1606435, 4176731, 20883655]

約数ペア:

[(1, 20883655), (5, 4176731), (13, 1606435), (23, 907985), (61, 342355), (65, 321287), (115, 181597), (229, 91195), (299, 69845), (305, 68471), (793, 26335), (1145, 18239), (1403, 14885), (1495, 13969), (2977, 7015), (3965, 5267)]