20989130

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51193}}^1$

素因数の和:51241

約数の個数: 16

約数和(自身を含む): 38702664

約数和(自身を除く): 17713534

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51193, 102386, 255965, 511930, 2098913, 4197826, 10494565, 20989130]

約数ペア:

[(1, 20989130), (2, 10494565), (5, 4197826), (10, 2098913), (41, 511930), (82, 255965), (205, 102386), (410, 51193)]