19991156

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{613}}^1$

素因数の和:911

約数の個数: 24

約数和(自身を含む): 36309504

約数和(自身を除く): 16318348

約数列:

[1, 2, 4, 31, 62, 124, 263, 526, 613, 1052, 1226, 2452, 8153, 16306, 19003, 32612, 38006, 76012, 161219, 322438, 644876, 4997789, 9995578, 19991156]

約数ペア:

[(1, 19991156), (2, 9995578), (4, 4997789), (31, 644876), (62, 322438), (124, 161219), (263, 76012), (526, 38006), (613, 32612), (1052, 19003), (1226, 16306), (2452, 8153)]