19665575

素因数分解:

$5^2\times {\mathrm{23}}^2\times {\mathrm{1487}}^1$

素因数の和:1543

約数の個数: 18

約数和(自身を含む): 25508784

約数和(自身を除く): 5843209

約数列:

[1, 5, 23, 25, 115, 529, 575, 1487, 2645, 7435, 13225, 34201, 37175, 171005, 786623, 855025, 3933115, 19665575]

約数ペア:

[(1, 19665575), (5, 3933115), (23, 855025), (25, 786623), (115, 171005), (529, 37175), (575, 34201), (1487, 13225), (2645, 7435)]