20485521

素因数分解:

$3^3\times 7^1\times {\mathrm{283}}^1\times {\mathrm{383}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 34897920

約数和(自身を除く): 14412399

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 283, 383, 849, 1149, 1981, 2547, 2681, 3447, 5943, 7641, 8043, 10341, 17829, 24129, 53487, 72387, 108389, 325167, 758723, 975501, 2276169, 2926503, 6828507, 20485521]

約数ペア:

[(1, 20485521), (3, 6828507), (7, 2926503), (9, 2276169), (21, 975501), (27, 758723), (63, 325167), (189, 108389), (283, 72387), (383, 53487), (849, 24129), (1149, 17829), (1981, 10341), (2547, 8043), (2681, 7641), (3447, 5943)]