20184880

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1321}}^1$

素因数の和:1525

約数の個数: 40

約数和(自身を含む): 47211264

約数和(自身を除く): 27026384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1321, 1528, 1910, 2642, 3056, 3820, 5284, 6605, 7640, 10568, 13210, 15280, 21136, 26420, 52840, 105680, 252311, 504622, 1009244, 1261555, 2018488, 2523110, 4036976, 5046220, 10092440, 20184880]

約数ペア:

[(1, 20184880), (2, 10092440), (4, 5046220), (5, 4036976), (8, 2523110), (10, 2018488), (16, 1261555), (20, 1009244), (40, 504622), (80, 252311), (191, 105680), (382, 52840), (764, 26420), (955, 21136), (1321, 15280), (1528, 13210), (1910, 10568), (2642, 7640), (3056, 6605), (3820, 5284)]