18705620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11839}}^1$

素因数の和:11927

約数の個数: 24

約数和(自身を含む): 39782400

約数和(自身を除く): 21076780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11839, 23678, 47356, 59195, 118390, 236780, 935281, 1870562, 3741124, 4676405, 9352810, 18705620]

約数ペア:

[(1, 18705620), (2, 9352810), (4, 4676405), (5, 3741124), (10, 1870562), (20, 935281), (79, 236780), (158, 118390), (316, 59195), (395, 47356), (790, 23678), (1580, 11839)]