20178665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16339}}^1$

素因数の和:16376

約数の個数: 16

約数和(自身を含む): 27451200

約数和(自身を除く): 7272535

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16339, 81695, 212407, 310441, 1062035, 1552205, 4035733, 20178665]

約数ペア:

[(1, 20178665), (5, 4035733), (13, 1552205), (19, 1062035), (65, 310441), (95, 212407), (247, 81695), (1235, 16339)]