21425740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21863}}^1$

素因数の和:21886

約数の個数: 36

約数和(自身を含む): 52342416

約数和(自身を除く): 30916676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21863, 43726, 87452, 109315, 153041, 218630, 306082, 437260, 612164, 765205, 1071287, 1530410, 2142574, 3060820, 4285148, 5356435, 10712870, 21425740]

約数ペア:

[(1, 21425740), (2, 10712870), (4, 5356435), (5, 4285148), (7, 3060820), (10, 2142574), (14, 1530410), (20, 1071287), (28, 765205), (35, 612164), (49, 437260), (70, 306082), (98, 218630), (140, 153041), (196, 109315), (245, 87452), (490, 43726), (980, 21863)]