21111016

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{977}}^1$

素因数の和:1093

約数の個数: 32

約数和(自身を含む): 41252040

約数和(自身を除く): 20141024

約数列:

[1, 2, 4, 8, 37, 73, 74, 146, 148, 292, 296, 584, 977, 1954, 2701, 3908, 5402, 7816, 10804, 21608, 36149, 71321, 72298, 142642, 144596, 285284, 289192, 570568, 2638877, 5277754, 10555508, 21111016]

約数ペア:

[(1, 21111016), (2, 10555508), (4, 5277754), (8, 2638877), (37, 570568), (73, 289192), (74, 285284), (146, 144596), (148, 142642), (292, 72298), (296, 71321), (584, 36149), (977, 21608), (1954, 10804), (2701, 7816), (3908, 5402)]