20686830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{689561}}^1$

素因数の和:689571

約数の個数: 16

約数和(自身を含む): 49648464

約数和(自身を除く): 28961634

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 689561, 1379122, 2068683, 3447805, 4137366, 6895610, 10343415, 20686830]

約数ペア:

[(1, 20686830), (2, 10343415), (3, 6895610), (5, 4137366), (6, 3447805), (10, 2068683), (15, 1379122), (30, 689561)]