20397715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2879}}^1$

素因数の和:3006

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 6213485

約数列:

[1, 5, 13, 65, 109, 545, 1417, 2879, 7085, 14395, 37427, 187135, 313811, 1569055, 4079543, 20397715]

約数ペア:

[(1, 20397715), (5, 4079543), (13, 1569055), (65, 313811), (109, 187135), (545, 37427), (1417, 14395), (2879, 7085)]