20913485

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 27386856

約数和(自身を除く): 6473371

約数列:

[1, 5, 17, 41, 85, 205, 289, 353, 697, 1445, 1765, 3485, 6001, 11849, 14473, 30005, 59245, 72365, 102017, 246041, 510085, 1230205, 4182697, 20913485]

約数ペア:

[(1, 20913485), (5, 4182697), (17, 1230205), (41, 510085), (85, 246041), (205, 102017), (289, 72365), (353, 59245), (697, 30005), (1445, 14473), (1765, 11849), (3485, 6001)]