20541565

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1787}}^1$

素因数の和:1833

約数の個数: 24

約数和(自身を含む): 28536480

約数和(自身を除く): 7994915

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1787, 2299, 8935, 11495, 19657, 33953, 98285, 169765, 216227, 373483, 1081135, 1867415, 4108313, 20541565]

約数ペア:

[(1, 20541565), (5, 4108313), (11, 1867415), (19, 1081135), (55, 373483), (95, 216227), (121, 169765), (209, 98285), (605, 33953), (1045, 19657), (1787, 11495), (2299, 8935)]