18678640

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1567}}^1$

素因数の和:1729

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 25068560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1567, 2384, 2980, 3134, 5960, 6268, 7835, 11920, 12536, 15670, 25072, 31340, 62680, 125360, 233483, 466966, 933932, 1167415, 1867864, 2334830, 3735728, 4669660, 9339320, 18678640]

約数ペア:

[(1, 18678640), (2, 9339320), (4, 4669660), (5, 3735728), (8, 2334830), (10, 1867864), (16, 1167415), (20, 933932), (40, 466966), (80, 233483), (149, 125360), (298, 62680), (596, 31340), (745, 25072), (1192, 15670), (1490, 12536), (1567, 11920), (2384, 7835), (2980, 6268), (3134, 5960)]