281515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 16

約数和(自身を含む): 374976

約数和(自身を除く): 93461

約数列:

[1, 5, 13, 61, 65, 71, 305, 355, 793, 923, 3965, 4331, 4615, 21655, 56303, 281515]

約数ペア:

[(1, 281515), (5, 56303), (13, 21655), (61, 4615), (65, 4331), (71, 3965), (305, 923), (355, 793)]