8686840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2749}}^1$

素因数の和:2839

約数の個数: 32

約数和(自身を含む): 19800000

約数和(自身を除く): 11113160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 2749, 3160, 5498, 10996, 13745, 21992, 27490, 54980, 109960, 217171, 434342, 868684, 1085855, 1737368, 2171710, 4343420, 8686840]

約数ペア:

[(1, 8686840), (2, 4343420), (4, 2171710), (5, 1737368), (8, 1085855), (10, 868684), (20, 434342), (40, 217171), (79, 109960), (158, 54980), (316, 27490), (395, 21992), (632, 13745), (790, 10996), (1580, 5498), (2749, 3160)]