21031568

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{853}}^1$

素因数の和:951

約数の個数: 40

約数和(自身を含む): 43205568

約数和(自身を除く): 22174000

約数列:

[1, 2, 4, 8, 16, 23, 46, 67, 92, 134, 184, 268, 368, 536, 853, 1072, 1541, 1706, 3082, 3412, 6164, 6824, 12328, 13648, 19619, 24656, 39238, 57151, 78476, 114302, 156952, 228604, 313904, 457208, 914416, 1314473, 2628946, 5257892, 10515784, 21031568]

約数ペア:

[(1, 21031568), (2, 10515784), (4, 5257892), (8, 2628946), (16, 1314473), (23, 914416), (46, 457208), (67, 313904), (92, 228604), (134, 156952), (184, 114302), (268, 78476), (368, 57151), (536, 39238), (853, 24656), (1072, 19619), (1541, 13648), (1706, 12328), (3082, 6824), (3412, 6164)]