1800738640

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{284927}}^1$

素因数の和:285019

約数の個数: 40

約数和(自身を含む): 4239728640

約数和(自身を除く): 2438990000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 284927, 569854, 1139708, 1424635, 2279416, 2849270, 4558832, 5698540, 11397080, 22509233, 22794160, 45018466, 90036932, 112546165, 180073864, 225092330, 360147728, 450184660, 900369320, 1800738640]

約数ペア:

[(1, 1800738640), (2, 900369320), (4, 450184660), (5, 360147728), (8, 225092330), (10, 180073864), (16, 112546165), (20, 90036932), (40, 45018466), (79, 22794160), (80, 22509233), (158, 11397080), (316, 5698540), (395, 4558832), (632, 2849270), (790, 2279416), (1264, 1424635), (1580, 1139708), (3160, 569854), (6320, 284927)]