20669545

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 27366552

約数和(自身を除く): 6697007

約数列:

[1, 5, 13, 61, 65, 169, 305, 401, 793, 845, 2005, 3965, 5213, 10309, 24461, 26065, 51545, 67769, 122305, 317993, 338845, 1589965, 4133909, 20669545]

約数ペア:

[(1, 20669545), (5, 4133909), (13, 1589965), (61, 338845), (65, 317993), (169, 122305), (305, 67769), (401, 51545), (793, 26065), (845, 24461), (2005, 10309), (3965, 5213)]