20861715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10457}}^1$

素因数の和:10491

約数の個数: 32

約数和(自身を含む): 40158720

約数和(自身を除く): 19297005

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10457, 31371, 52285, 73199, 156855, 198683, 219597, 365995, 596049, 993415, 1097985, 1390781, 2980245, 4172343, 6953905, 20861715]

約数ペア:

[(1, 20861715), (3, 6953905), (5, 4172343), (7, 2980245), (15, 1390781), (19, 1097985), (21, 993415), (35, 596049), (57, 365995), (95, 219597), (105, 198683), (133, 156855), (285, 73199), (399, 52285), (665, 31371), (1995, 10457)]