21787130

素因数分解:

$2^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{2473}}^1$

素因数の和:3361

約数の個数: 16

約数和(自身を含む): 39277224

約数和(自身を除く): 17490094

約数列:

[1, 2, 5, 10, 881, 1762, 2473, 4405, 4946, 8810, 12365, 24730, 2178713, 4357426, 10893565, 21787130]

約数ペア:

[(1, 21787130), (2, 10893565), (5, 4357426), (10, 2178713), (881, 24730), (1762, 12365), (2473, 8810), (4405, 4946)]