21402615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2677}}^1$

素因数の和:2739

約数の個数: 32

約数和(自身を含む): 37791936

約数和(自身を除く): 16389321

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2665, 2677, 7995, 8031, 13385, 34801, 40155, 104403, 109757, 174005, 329271, 522015, 548785, 1426841, 1646355, 4280523, 7134205, 21402615]

約数ペア:

[(1, 21402615), (3, 7134205), (5, 4280523), (13, 1646355), (15, 1426841), (39, 548785), (41, 522015), (65, 329271), (123, 174005), (195, 109757), (205, 104403), (533, 40155), (615, 34801), (1599, 13385), (2665, 8031), (2677, 7995)]