18720715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{1609}}^1$

素因数の和:1806

約数の個数: 16

約数和(自身を含む): 24343200

約数和(自身を除く): 5622485

約数列:

[1, 5, 13, 65, 179, 895, 1609, 2327, 8045, 11635, 20917, 104585, 288011, 1440055, 3744143, 18720715]

約数ペア:

[(1, 18720715), (5, 3744143), (13, 1440055), (65, 288011), (179, 104585), (895, 20917), (1609, 11635), (2327, 8045)]