21856965

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{112087}}^1$

素因数の和:112108

約数の個数: 16

約数和(自身を含む): 37661568

約数和(自身を除く): 15804603

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 112087, 336261, 560435, 1457131, 1681305, 4371393, 7285655, 21856965]

約数ペア:

[(1, 21856965), (3, 7285655), (5, 4371393), (13, 1681305), (15, 1457131), (39, 560435), (65, 336261), (195, 112087)]