81355070

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{198427}}^1$

素因数の和:198475

約数の個数: 16

約数和(自身を含む): 150011568

約数和(自身を除く): 68656498

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 198427, 396854, 992135, 1984270, 8135507, 16271014, 40677535, 81355070]

約数ペア:

[(1, 81355070), (2, 40677535), (5, 16271014), (10, 8135507), (41, 1984270), (82, 992135), (205, 396854), (410, 198427)]