21504379

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 25084080

約数和(自身を除く): 3579701

約数列:

[1, 13, 23, 53, 59, 299, 529, 689, 767, 1219, 1357, 3127, 6877, 15847, 17641, 28037, 31211, 40651, 71921, 364481, 405743, 934973, 1654183, 21504379]

約数ペア:

[(1, 21504379), (13, 1654183), (23, 934973), (53, 405743), (59, 364481), (299, 71921), (529, 40651), (689, 31211), (767, 28037), (1219, 17641), (1357, 15847), (3127, 6877)]