31146280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{997}}^1$

素因数の和:1090

約数の個数: 64

約数和(自身を含む): 77604480

約数和(自身を除く): 46458200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 997, 1420, 1562, 1994, 2840, 3124, 3905, 3988, 4985, 6248, 7810, 7976, 9970, 10967, 15620, 19940, 21934, 31240, 39880, 43868, 54835, 70787, 87736, 109670, 141574, 219340, 283148, 353935, 438680, 566296, 707870, 778657, 1415740, 1557314, 2831480, 3114628, 3893285, 6229256, 7786570, 15573140, 31146280]

約数ペア:

[(1, 31146280), (2, 15573140), (4, 7786570), (5, 6229256), (8, 3893285), (10, 3114628), (11, 2831480), (20, 1557314), (22, 1415740), (40, 778657), (44, 707870), (55, 566296), (71, 438680), (88, 353935), (110, 283148), (142, 219340), (220, 141574), (284, 109670), (355, 87736), (440, 70787), (568, 54835), (710, 43868), (781, 39880), (997, 31240), (1420, 21934), (1562, 19940), (1994, 15620), (2840, 10967), (3124, 9970), (3905, 7976), (3988, 7810), (4985, 6248)]