21085030

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72707}}^1$

素因数の和:72743

約数の個数: 16

約数和(自身を含む): 39262320

約数和(自身を除く): 18177290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72707, 145414, 363535, 727070, 2108503, 4217006, 10542515, 21085030]

約数ペア:

[(1, 21085030), (2, 10542515), (5, 4217006), (10, 2108503), (29, 727070), (58, 363535), (145, 145414), (290, 72707)]