20757724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 41144320

約数和(自身を除く): 20386596

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 79, 124, 158, 163, 316, 326, 403, 652, 806, 1027, 1612, 2054, 2119, 2449, 4108, 4238, 4898, 5053, 8476, 9796, 10106, 12877, 20212, 25754, 31837, 51508, 63674, 65689, 127348, 131378, 167401, 262756, 334802, 399187, 669604, 798374, 1596748, 5189431, 10378862, 20757724]

約数ペア:

[(1, 20757724), (2, 10378862), (4, 5189431), (13, 1596748), (26, 798374), (31, 669604), (52, 399187), (62, 334802), (79, 262756), (124, 167401), (158, 131378), (163, 127348), (316, 65689), (326, 63674), (403, 51508), (652, 31837), (806, 25754), (1027, 20212), (1612, 12877), (2054, 10106), (2119, 9796), (2449, 8476), (4108, 5053), (4238, 4898)]