19973605

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{991}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 5024795

約数列:

[1, 5, 29, 139, 145, 695, 991, 4031, 4955, 20155, 28739, 137749, 143695, 688745, 3994721, 19973605]

約数ペア:

[(1, 19973605), (5, 3994721), (29, 688745), (139, 143695), (145, 137749), (695, 28739), (991, 20155), (4031, 4955)]