7997960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2531}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 18230400

約数和(自身を除く): 10232440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 2531, 3160, 5062, 10124, 12655, 20248, 25310, 50620, 101240, 199949, 399898, 799796, 999745, 1599592, 1999490, 3998980, 7997960]

約数ペア:

[(1, 7997960), (2, 3998980), (4, 1999490), (5, 1599592), (8, 999745), (10, 799796), (20, 399898), (40, 199949), (79, 101240), (158, 50620), (316, 25310), (395, 20248), (632, 12655), (790, 10124), (1580, 5062), (2531, 3160)]