2051249680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1\times {\mathrm{1451}}^1$

素因数の和:1936

約数の個数: 80

約数和(自身を含む): 4900186368

約数和(自身を除く): 2848936688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 431, 656, 820, 862, 1451, 1640, 1724, 2155, 2902, 3280, 3448, 4310, 5804, 6896, 7255, 8620, 11608, 14510, 17240, 17671, 23216, 29020, 34480, 35342, 58040, 59491, 70684, 88355, 116080, 118982, 141368, 176710, 237964, 282736, 297455, 353420, 475928, 594910, 625381, 706840, 951856, 1189820, 1250762, 1413680, 2379640, 2501524, 3126905, 4759280, 5003048, 6253810, 10006096, 12507620, 25015240, 25640621, 50030480, 51281242, 102562484, 128203105, 205124968, 256406210, 410249936, 512812420, 1025624840, 2051249680]

約数ペア:

[(1, 2051249680), (2, 1025624840), (4, 512812420), (5, 410249936), (8, 256406210), (10, 205124968), (16, 128203105), (20, 102562484), (40, 51281242), (41, 50030480), (80, 25640621), (82, 25015240), (164, 12507620), (205, 10006096), (328, 6253810), (410, 5003048), (431, 4759280), (656, 3126905), (820, 2501524), (862, 2379640), (1451, 1413680), (1640, 1250762), (1724, 1189820), (2155, 951856), (2902, 706840), (3280, 625381), (3448, 594910), (4310, 475928), (5804, 353420), (6896, 297455), (7255, 282736), (8620, 237964), (11608, 176710), (14510, 141368), (17240, 118982), (17671, 116080), (23216, 88355), (29020, 70684), (34480, 59491), (35342, 58040)]