21351812

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{1621}}^1$

素因数の和:1751

約数の個数: 24

約数和(自身を含む): 38830680

約数和(自身を除く): 17478868

約数列:

[1, 2, 4, 37, 74, 89, 148, 178, 356, 1621, 3242, 3293, 6484, 6586, 13172, 59977, 119954, 144269, 239908, 288538, 577076, 5337953, 10675906, 21351812]

約数ペア:

[(1, 21351812), (2, 10675906), (4, 5337953), (37, 577076), (74, 288538), (89, 239908), (148, 144269), (178, 119954), (356, 59977), (1621, 13172), (3242, 6586), (3293, 6484)]