21401552

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9623}}^1$

素因数の和:9770

約数の個数: 20

約数和(自身を含む): 41768160

約数和(自身を除く): 20366608

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9623, 19246, 38492, 76984, 153968, 1337597, 2675194, 5350388, 10700776, 21401552]

約数ペア:

[(1, 21401552), (2, 10700776), (4, 5350388), (8, 2675194), (16, 1337597), (139, 153968), (278, 76984), (556, 38492), (1112, 19246), (2224, 9623)]