51538640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{827}}^1$

素因数の和:900

約数の個数: 80

約数和(自身を含む): 129366720

約数和(自身を除く): 77828080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 827, 1520, 1558, 1640, 1654, 3116, 3280, 3308, 3895, 4135, 6232, 6616, 7790, 8270, 12464, 13232, 15580, 15713, 16540, 31160, 31426, 33080, 33907, 62320, 62852, 66160, 67814, 78565, 125704, 135628, 157130, 169535, 251408, 271256, 314260, 339070, 542512, 628520, 644233, 678140, 1257040, 1288466, 1356280, 2576932, 2712560, 3221165, 5153864, 6442330, 10307728, 12884660, 25769320, 51538640]

約数ペア:

[(1, 51538640), (2, 25769320), (4, 12884660), (5, 10307728), (8, 6442330), (10, 5153864), (16, 3221165), (19, 2712560), (20, 2576932), (38, 1356280), (40, 1288466), (41, 1257040), (76, 678140), (80, 644233), (82, 628520), (95, 542512), (152, 339070), (164, 314260), (190, 271256), (205, 251408), (304, 169535), (328, 157130), (380, 135628), (410, 125704), (656, 78565), (760, 67814), (779, 66160), (820, 62852), (827, 62320), (1520, 33907), (1558, 33080), (1640, 31426), (1654, 31160), (3116, 16540), (3280, 15713), (3308, 15580), (3895, 13232), (4135, 12464), (6232, 8270), (6616, 7790)]