21446620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82487}}^1$

素因数の和:82509

約数の個数: 24

約数和(自身を含む): 48502944

約数和(自身を除く): 27056324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82487, 164974, 329948, 412435, 824870, 1072331, 1649740, 2144662, 4289324, 5361655, 10723310, 21446620]

約数ペア:

[(1, 21446620), (2, 10723310), (4, 5361655), (5, 4289324), (10, 2144662), (13, 1649740), (20, 1072331), (26, 824870), (52, 412435), (65, 329948), (130, 164974), (260, 82487)]