778875620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43319}}^1$

素因数の和:43388

約数の個数: 48

約数和(自身を含む): 1746662400

約数和(自身を除く): 967786780

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1798, 3596, 4495, 8990, 17980, 43319, 86638, 173276, 216595, 433190, 866380, 1256251, 1342889, 2512502, 2685778, 5025004, 5371556, 6281255, 6714445, 12562510, 13428890, 25125020, 26857780, 38943781, 77887562, 155775124, 194718905, 389437810, 778875620]

約数ペア:

[(1, 778875620), (2, 389437810), (4, 194718905), (5, 155775124), (10, 77887562), (20, 38943781), (29, 26857780), (31, 25125020), (58, 13428890), (62, 12562510), (116, 6714445), (124, 6281255), (145, 5371556), (155, 5025004), (290, 2685778), (310, 2512502), (580, 1342889), (620, 1256251), (899, 866380), (1798, 433190), (3596, 216595), (4495, 173276), (8990, 86638), (17980, 43319)]