15617980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{397}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 37711296

約数和(自身を除く): 22093316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 397, 562, 794, 1124, 1405, 1588, 1967, 1985, 2779, 2810, 3934, 3970, 5558, 5620, 7868, 7940, 9835, 11116, 13895, 19670, 27790, 39340, 55580, 111557, 223114, 446228, 557785, 780899, 1115570, 1561798, 2231140, 3123596, 3904495, 7808990, 15617980]

約数ペア:

[(1, 15617980), (2, 7808990), (4, 3904495), (5, 3123596), (7, 2231140), (10, 1561798), (14, 1115570), (20, 780899), (28, 557785), (35, 446228), (70, 223114), (140, 111557), (281, 55580), (397, 39340), (562, 27790), (794, 19670), (1124, 13895), (1405, 11116), (1588, 9835), (1967, 7940), (1985, 7868), (2779, 5620), (2810, 5558), (3934, 3970)]