15660880

素因数分解:

$2^4\times 5^1\times {\mathrm{195761}}^1$

素因数の和:195774

約数の個数: 20

約数和(自身を含む): 36411732

約数和(自身を除く): 20750852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195761, 391522, 783044, 978805, 1566088, 1957610, 3132176, 3915220, 7830440, 15660880]

約数ペア:

[(1, 15660880), (2, 7830440), (4, 3915220), (5, 3132176), (8, 1957610), (10, 1566088), (16, 978805), (20, 783044), (40, 391522), (80, 195761)]