21507145

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1871}}^1$

素因数の和:1917

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 8369975

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1871, 2299, 9355, 11495, 20581, 35549, 102905, 177745, 226391, 391039, 1131955, 1955195, 4301429, 21507145]

約数ペア:

[(1, 21507145), (5, 4301429), (11, 1955195), (19, 1131955), (55, 391039), (95, 226391), (121, 177745), (209, 102905), (605, 35549), (1045, 20581), (1871, 11495), (2299, 9355)]