399429140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1815587}}^1$

素因数の和:1815607

約数の個数: 24

約数和(自身を含む): 915056352

約数和(自身を除く): 515627212

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1815587, 3631174, 7262348, 9077935, 18155870, 19971457, 36311740, 39942914, 79885828, 99857285, 199714570, 399429140]

約数ペア:

[(1, 399429140), (2, 199714570), (4, 99857285), (5, 79885828), (10, 39942914), (11, 36311740), (20, 19971457), (22, 18155870), (44, 9077935), (55, 7262348), (110, 3631174), (220, 1815587)]