21179830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{683}}^1$

素因数の和:1140

約数の個数: 32

約数和(自身を含む): 43732224

約数和(自身を除く): 22552394

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 443, 683, 886, 1366, 2215, 3101, 3415, 4430, 4781, 6202, 6830, 9562, 15505, 23905, 31010, 47810, 302569, 605138, 1512845, 2117983, 3025690, 4235966, 10589915, 21179830]

約数ペア:

[(1, 21179830), (2, 10589915), (5, 4235966), (7, 3025690), (10, 2117983), (14, 1512845), (35, 605138), (70, 302569), (443, 47810), (683, 31010), (886, 23905), (1366, 15505), (2215, 9562), (3101, 6830), (3415, 6202), (4430, 4781)]