19938020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12619}}^1$

素因数の和:12707

約数の個数: 24

約数和(自身を含む): 42403200

約数和(自身を除く): 22465180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12619, 25238, 50476, 63095, 126190, 252380, 996901, 1993802, 3987604, 4984505, 9969010, 19938020]

約数ペア:

[(1, 19938020), (2, 9969010), (4, 4984505), (5, 3987604), (10, 1993802), (20, 996901), (79, 252380), (158, 126190), (316, 63095), (395, 50476), (790, 25238), (1580, 12619)]