21244912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102139}}^1$

素因数の和:102160

約数の個数: 20

約数和(自身を含む): 44328760

約数和(自身を除く): 23083848

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102139, 204278, 408556, 817112, 1327807, 1634224, 2655614, 5311228, 10622456, 21244912]

約数ペア:

[(1, 21244912), (2, 10622456), (4, 5311228), (8, 2655614), (13, 1634224), (16, 1327807), (26, 817112), (52, 408556), (104, 204278), (208, 102139)]