20201953780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1451}}^1\times {\mathrm{16979}}^1$

素因数の和:18480

約数の個数: 48

約数和(自身を含む): 43491349440

約数和(自身を除く): 23289395660

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1451, 2902, 5804, 7255, 14510, 16979, 29020, 33958, 59491, 67916, 84895, 118982, 169790, 237964, 297455, 339580, 594910, 696139, 1189820, 1392278, 2784556, 3480695, 6961390, 13922780, 24636529, 49273058, 98546116, 123182645, 246365290, 492730580, 1010097689, 2020195378, 4040390756, 5050488445, 10100976890, 20201953780]

約数ペア:

[(1, 20201953780), (2, 10100976890), (4, 5050488445), (5, 4040390756), (10, 2020195378), (20, 1010097689), (41, 492730580), (82, 246365290), (164, 123182645), (205, 98546116), (410, 49273058), (820, 24636529), (1451, 13922780), (2902, 6961390), (5804, 3480695), (7255, 2784556), (14510, 1392278), (16979, 1189820), (29020, 696139), (33958, 594910), (59491, 339580), (67916, 297455), (84895, 237964), (118982, 169790)]