19480880

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2411}}^1$

素因数の和:2525

約数の個数: 40

約数和(自身を含む): 45760464

約数和(自身を除く): 26279584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2411, 4040, 4822, 8080, 9644, 12055, 19288, 24110, 38576, 48220, 96440, 192880, 243511, 487022, 974044, 1217555, 1948088, 2435110, 3896176, 4870220, 9740440, 19480880]

約数ペア:

[(1, 19480880), (2, 9740440), (4, 4870220), (5, 3896176), (8, 2435110), (10, 1948088), (16, 1217555), (20, 974044), (40, 487022), (80, 243511), (101, 192880), (202, 96440), (404, 48220), (505, 38576), (808, 24110), (1010, 19288), (1616, 12055), (2020, 9644), (2411, 8080), (4040, 4822)]