21421580

素因数分解:

$2^2\times 5^1\times {\mathrm{883}}^1\times {\mathrm{1213}}^1$

素因数の和:2105

約数の個数: 24

約数和(自身を含む): 45073392

約数和(自身を除く): 23651812

約数列:

[1, 2, 4, 5, 10, 20, 883, 1213, 1766, 2426, 3532, 4415, 4852, 6065, 8830, 12130, 17660, 24260, 1071079, 2142158, 4284316, 5355395, 10710790, 21421580]

約数ペア:

[(1, 21421580), (2, 10710790), (4, 5355395), (5, 4284316), (10, 2142158), (20, 1071079), (883, 24260), (1213, 17660), (1766, 12130), (2426, 8830), (3532, 6065), (4415, 4852)]