15656720

素因数分解:

$2^4\times 5^1\times {\mathrm{195709}}^1$

素因数の和:195722

約数の個数: 20

約数和(自身を含む): 36402060

約数和(自身を除く): 20745340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195709, 391418, 782836, 978545, 1565672, 1957090, 3131344, 3914180, 7828360, 15656720]

約数ペア:

[(1, 15656720), (2, 7828360), (4, 3914180), (5, 3131344), (8, 1957090), (10, 1565672), (16, 978545), (20, 782836), (40, 391418), (80, 195709)]