25491915

素因数分解:

$3^5\times 5^1\times {\mathrm{20981}}^1$

素因数の和:21001

約数の個数: 24

約数和(自身を含む): 45824688

約数和(自身を除く): 20332773

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 20981, 62943, 104905, 188829, 314715, 566487, 944145, 1699461, 2832435, 5098383, 8497305, 25491915]

約数ペア:

[(1, 25491915), (3, 8497305), (5, 5098383), (9, 2832435), (15, 1699461), (27, 944145), (45, 566487), (81, 314715), (135, 188829), (243, 104905), (405, 62943), (1215, 20981)]