20104565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 27847680

約数和(自身を除く): 7743115

約数列:

[1, 5, 13, 19, 65, 73, 95, 223, 247, 365, 949, 1115, 1235, 1387, 2899, 4237, 4745, 6935, 14495, 16279, 18031, 21185, 55081, 81395, 90155, 211627, 275405, 309301, 1058135, 1546505, 4020913, 20104565]

約数ペア:

[(1, 20104565), (5, 4020913), (13, 1546505), (19, 1058135), (65, 309301), (73, 275405), (95, 211627), (223, 90155), (247, 81395), (365, 55081), (949, 21185), (1115, 18031), (1235, 16279), (1387, 14495), (2899, 6935), (4237, 4745)]