21850270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9887}}^1$

素因数の和:9924

約数の個数: 32

約数和(自身を含む): 44851968

約数和(自身を除く): 23001698

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9887, 19774, 49435, 98870, 128531, 168079, 257062, 336158, 642655, 840395, 1285310, 1680790, 2185027, 4370054, 10925135, 21850270]

約数ペア:

[(1, 21850270), (2, 10925135), (5, 4370054), (10, 2185027), (13, 1680790), (17, 1285310), (26, 840395), (34, 642655), (65, 336158), (85, 257062), (130, 168079), (170, 128531), (221, 98870), (442, 49435), (1105, 19774), (2210, 9887)]