20047885

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2549}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 28488600

約数和(自身を除く): 8440715

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2549, 7865, 12745, 28039, 33137, 140195, 165685, 308429, 364507, 1542145, 1822535, 4009577, 20047885]

約数ペア:

[(1, 20047885), (5, 4009577), (11, 1822535), (13, 1542145), (55, 364507), (65, 308429), (121, 165685), (143, 140195), (605, 33137), (715, 28039), (1573, 12745), (2549, 7865)]