20664490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 26779478

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 47, 55, 70, 77, 94, 110, 154, 235, 329, 385, 470, 517, 571, 658, 770, 1034, 1142, 1645, 2585, 2855, 3290, 3619, 3997, 5170, 5710, 6281, 7238, 7994, 12562, 18095, 19985, 26837, 31405, 36190, 39970, 43967, 53674, 62810, 87934, 134185, 187859, 219835, 268370, 295207, 375718, 439670, 590414, 939295, 1476035, 1878590, 2066449, 2952070, 4132898, 10332245, 20664490]

約数ペア:

[(1, 20664490), (2, 10332245), (5, 4132898), (7, 2952070), (10, 2066449), (11, 1878590), (14, 1476035), (22, 939295), (35, 590414), (47, 439670), (55, 375718), (70, 295207), (77, 268370), (94, 219835), (110, 187859), (154, 134185), (235, 87934), (329, 62810), (385, 53674), (470, 43967), (517, 39970), (571, 36190), (658, 31405), (770, 26837), (1034, 19985), (1142, 18095), (1645, 12562), (2585, 7994), (2855, 7238), (3290, 6281), (3619, 5710), (3997, 5170)]