7881140

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1013}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 16609320

約数和(自身を除く): 8728180

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1013, 1556, 1945, 2026, 3890, 4052, 5065, 7780, 10130, 20260, 394057, 788114, 1576228, 1970285, 3940570, 7881140]

約数ペア:

[(1, 7881140), (2, 3940570), (4, 1970285), (5, 1576228), (10, 788114), (20, 394057), (389, 20260), (778, 10130), (1013, 7780), (1556, 5065), (1945, 4052), (2026, 3890)]