20656830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{688561}}^1$

素因数の和:688571

約数の個数: 16

約数和(自身を含む): 49576464

約数和(自身を除く): 28919634

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 688561, 1377122, 2065683, 3442805, 4131366, 6885610, 10328415, 20656830]

約数ペア:

[(1, 20656830), (2, 10328415), (3, 6885610), (5, 4131366), (6, 3442805), (10, 2065683), (15, 1377122), (30, 688561)]