19770490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{6841}}^1$

素因数の和:6882

約数の個数: 24

約数和(自身を含む): 37808892

約数和(自身を除く): 18038402

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 6841, 13682, 34205, 68410, 116297, 232594, 581485, 1162970, 1977049, 3954098, 9885245, 19770490]

約数ペア:

[(1, 19770490), (2, 9885245), (5, 3954098), (10, 1977049), (17, 1162970), (34, 581485), (85, 232594), (170, 116297), (289, 68410), (578, 34205), (1445, 13682), (2890, 6841)]