21027237

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{401}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 35195904

約数和(自身を除く): 14168667

約数列:

[1, 3, 7, 11, 21, 33, 77, 227, 231, 401, 681, 1203, 1589, 2497, 2807, 4411, 4767, 7491, 8421, 13233, 17479, 30877, 52437, 91027, 92631, 273081, 637189, 1001297, 1911567, 3003891, 7009079, 21027237]

約数ペア:

[(1, 21027237), (3, 7009079), (7, 3003891), (11, 1911567), (21, 1001297), (33, 637189), (77, 273081), (227, 92631), (231, 91027), (401, 52437), (681, 30877), (1203, 17479), (1589, 13233), (2497, 8421), (2807, 7491), (4411, 4767)]