21292856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3863}}^1$

素因数の和:3935

約数の個数: 32

約数和(自身を含む): 43817760

約数和(自身を除く): 22524904

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3863, 5512, 7726, 15452, 30904, 50219, 100438, 200876, 204739, 401752, 409478, 818956, 1637912, 2661607, 5323214, 10646428, 21292856]

約数ペア:

[(1, 21292856), (2, 10646428), (4, 5323214), (8, 2661607), (13, 1637912), (26, 818956), (52, 409478), (53, 401752), (104, 204739), (106, 200876), (212, 100438), (424, 50219), (689, 30904), (1378, 15452), (2756, 7726), (3863, 5512)]