68840140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{202471}}^1$

素因数の和:202497

約数の個数: 24

約数和(自身を含む): 153068832

約数和(自身を除く): 84228692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 202471, 404942, 809884, 1012355, 2024710, 3442007, 4049420, 6884014, 13768028, 17210035, 34420070, 68840140]

約数ペア:

[(1, 68840140), (2, 34420070), (4, 17210035), (5, 13768028), (10, 6884014), (17, 4049420), (20, 3442007), (34, 2024710), (68, 1012355), (85, 809884), (170, 404942), (340, 202471)]