21645652

素因数分解:

$2^2\times 7^2\times {\mathrm{110437}}^1$

素因数の和:110455

約数の個数: 18

約数和(自身を含む): 44064762

約数和(自身を除く): 22419110

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 110437, 220874, 441748, 773059, 1546118, 3092236, 5411413, 10822826, 21645652]

約数ペア:

[(1, 21645652), (2, 10822826), (4, 5411413), (7, 3092236), (14, 1546118), (28, 773059), (49, 441748), (98, 220874), (196, 110437)]