11131240

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{661}}^1$

素因数の和:1093

約数の個数: 32

約数和(自身を含む): 25142760

約数和(自身を除く): 14011520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 661, 842, 1322, 1684, 2105, 2644, 3305, 3368, 4210, 5288, 6610, 8420, 13220, 16840, 26440, 278281, 556562, 1113124, 1391405, 2226248, 2782810, 5565620, 11131240]

約数ペア:

[(1, 11131240), (2, 5565620), (4, 2782810), (5, 2226248), (8, 1391405), (10, 1113124), (20, 556562), (40, 278281), (421, 26440), (661, 16840), (842, 13220), (1322, 8420), (1684, 6610), (2105, 5288), (2644, 4210), (3305, 3368)]