20819430

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25703}}^1$

素因数の和:25722

約数の個数: 40

約数和(自身を含む): 55983312

約数和(自身を除く): 35163882

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25703, 51406, 77109, 128515, 154218, 231327, 257030, 385545, 462654, 693981, 771090, 1156635, 1387962, 2081943, 2313270, 3469905, 4163886, 6939810, 10409715, 20819430]

約数ペア:

[(1, 20819430), (2, 10409715), (3, 6939810), (5, 4163886), (6, 3469905), (9, 2313270), (10, 2081943), (15, 1387962), (18, 1156635), (27, 771090), (30, 693981), (45, 462654), (54, 385545), (81, 257030), (90, 231327), (135, 154218), (162, 128515), (270, 77109), (405, 51406), (810, 25703)]