20904190

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:696

約数の個数: 32

約数和(自身を含む): 38983680

約数和(自身を除く): 18079490

約数列:

[1, 2, 5, 10, 47, 79, 94, 158, 235, 395, 470, 563, 790, 1126, 2815, 3713, 5630, 7426, 18565, 26461, 37130, 44477, 52922, 88954, 132305, 222385, 264610, 444770, 2090419, 4180838, 10452095, 20904190]

約数ペア:

[(1, 20904190), (2, 10452095), (5, 4180838), (10, 2090419), (47, 444770), (79, 264610), (94, 222385), (158, 132305), (235, 88954), (395, 52922), (470, 44477), (563, 37130), (790, 26461), (1126, 18565), (2815, 7426), (3713, 5630)]