80255860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1009}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 174600720

約数和(自身を除く): 94344860

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 820, 970, 1009, 1940, 2018, 3977, 4036, 5045, 7954, 10090, 15908, 19885, 20180, 39770, 41369, 79540, 82738, 97873, 165476, 195746, 206845, 391492, 413690, 489365, 827380, 978730, 1957460, 4012793, 8025586, 16051172, 20063965, 40127930, 80255860]

約数ペア:

[(1, 80255860), (2, 40127930), (4, 20063965), (5, 16051172), (10, 8025586), (20, 4012793), (41, 1957460), (82, 978730), (97, 827380), (164, 489365), (194, 413690), (205, 391492), (388, 206845), (410, 195746), (485, 165476), (820, 97873), (970, 82738), (1009, 79540), (1940, 41369), (2018, 39770), (3977, 20180), (4036, 19885), (5045, 15908), (7954, 10090)]