21379535

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 27473040

約数和(自身を除く): 6093505

約数列:

[1, 5, 23, 59, 115, 137, 295, 529, 685, 1357, 2645, 3151, 6785, 8083, 15755, 31211, 40415, 72473, 156055, 185909, 362365, 929545, 4275907, 21379535]

約数ペア:

[(1, 21379535), (5, 4275907), (23, 929545), (59, 362365), (115, 185909), (137, 156055), (295, 72473), (529, 40415), (685, 31211), (1357, 15755), (2645, 8083), (3151, 6785)]