18985588

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:991

約数の個数: 24

約数和(自身を含む): 34375712

約数和(自身を除く): 15390124

約数列:

[1, 2, 4, 37, 74, 148, 163, 326, 652, 787, 1574, 3148, 6031, 12062, 24124, 29119, 58238, 116476, 128281, 256562, 513124, 4746397, 9492794, 18985588]

約数ペア:

[(1, 18985588), (2, 9492794), (4, 4746397), (37, 513124), (74, 256562), (148, 128281), (163, 116476), (326, 58238), (652, 29119), (787, 24124), (1574, 12062), (3148, 6031)]