20377985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{1609}}^1$

素因数の和:1780

約数の個数: 16

約数和(自身を含む): 26082000

約数和(自身を除く): 5704015

約数列:

[1, 5, 17, 85, 149, 745, 1609, 2533, 8045, 12665, 27353, 136765, 239741, 1198705, 4075597, 20377985]

約数ペア:

[(1, 20377985), (5, 4075597), (17, 1198705), (85, 239741), (149, 136765), (745, 27353), (1609, 12665), (2533, 8045)]