18602660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 40567296

約数和(自身を除く): 21964636

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 223, 388, 430, 446, 485, 860, 892, 970, 1115, 1940, 2230, 4171, 4460, 8342, 9589, 16684, 19178, 20855, 21631, 38356, 41710, 43262, 47945, 83420, 86524, 95890, 108155, 191780, 216310, 432620, 930133, 1860266, 3720532, 4650665, 9301330, 18602660]

約数ペア:

[(1, 18602660), (2, 9301330), (4, 4650665), (5, 3720532), (10, 1860266), (20, 930133), (43, 432620), (86, 216310), (97, 191780), (172, 108155), (194, 95890), (215, 86524), (223, 83420), (388, 47945), (430, 43262), (446, 41710), (485, 38356), (860, 21631), (892, 20855), (970, 19178), (1115, 16684), (1940, 9589), (2230, 8342), (4171, 4460)]