21140135

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{499}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 26220000

約数和(自身を除く): 5079865

約数列:

[1, 5, 37, 185, 229, 499, 1145, 2495, 8473, 18463, 42365, 92315, 114271, 571355, 4228027, 21140135]

約数ペア:

[(1, 21140135), (5, 4228027), (37, 571355), (185, 114271), (229, 92315), (499, 42365), (1145, 18463), (2495, 8473)]