19916215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{1409}}^1$

素因数の和:1682

約数の個数: 16

約数和(自身を含む): 26192160

約数和(自身を除く): 6275945

約数列:

[1, 5, 11, 55, 257, 1285, 1409, 2827, 7045, 14135, 15499, 77495, 362113, 1810565, 3983243, 19916215]

約数ペア:

[(1, 19916215), (5, 3983243), (11, 1810565), (55, 362113), (257, 77495), (1285, 15499), (1409, 14135), (2827, 7045)]