13688240

素因数分解:

$2^4\times 5^1\times {\mathrm{171103}}^1$

素因数の和:171116

約数の個数: 20

約数和(自身を含む): 31825344

約数和(自身を除く): 18137104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 171103, 342206, 684412, 855515, 1368824, 1711030, 2737648, 3422060, 6844120, 13688240]

約数ペア:

[(1, 13688240), (2, 6844120), (4, 3422060), (5, 2737648), (8, 1711030), (10, 1368824), (16, 855515), (20, 684412), (40, 342206), (80, 171103)]