15519620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{12721}}^1$

素因数の和:12791

約数の個数: 24

約数和(自身を含む): 33128088

約数和(自身を除く): 17608468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 12721, 25442, 50884, 63605, 127210, 254420, 775981, 1551962, 3103924, 3879905, 7759810, 15519620]

約数ペア:

[(1, 15519620), (2, 7759810), (4, 3879905), (5, 3103924), (10, 1551962), (20, 775981), (61, 254420), (122, 127210), (244, 63605), (305, 50884), (610, 25442), (1220, 12721)]