8028980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2557}}^1$

素因数の和:2723

約数の個数: 24

約数和(自身を含む): 16974888

約数和(自身を除く): 8945908

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 2557, 3140, 5114, 10228, 12785, 25570, 51140, 401449, 802898, 1605796, 2007245, 4014490, 8028980]

約数ペア:

[(1, 8028980), (2, 4014490), (4, 2007245), (5, 1605796), (10, 802898), (20, 401449), (157, 51140), (314, 25570), (628, 12785), (785, 10228), (1570, 5114), (2557, 3140)]