18921815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{953}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 26170128

約数和(自身を除く): 7248313

約数列:

[1, 5, 11, 19, 55, 95, 209, 361, 953, 1045, 1805, 3971, 4765, 10483, 18107, 19855, 52415, 90535, 199177, 344033, 995885, 1720165, 3784363, 18921815]

約数ペア:

[(1, 18921815), (5, 3784363), (11, 1720165), (19, 995885), (55, 344033), (95, 199177), (209, 90535), (361, 52415), (953, 19855), (1045, 18107), (1805, 10483), (3971, 4765)]