18718765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4721}}^1$

素因数の和:4800

約数の個数: 16

約数和(自身を含む): 24592176

約数和(自身を除く): 5873411

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 4721, 23605, 61373, 287981, 306865, 1439905, 3743753, 18718765]

約数ペア:

[(1, 18718765), (5, 3743753), (13, 1439905), (61, 306865), (65, 287981), (305, 61373), (793, 23605), (3965, 4721)]