1789477880

素因数分解:

$2^3\times 5^1\times {\mathrm{2647}}^1\times {\mathrm{16901}}^1$

素因数の和:19559

約数の個数: 32

約数和(自身を含む): 4028084640

約数和(自身を除く): 2238606760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2647, 5294, 10588, 13235, 16901, 21176, 26470, 33802, 52940, 67604, 84505, 105880, 135208, 169010, 338020, 676040, 44736947, 89473894, 178947788, 223684735, 357895576, 447369470, 894738940, 1789477880]

約数ペア:

[(1, 1789477880), (2, 894738940), (4, 447369470), (5, 357895576), (8, 223684735), (10, 178947788), (20, 89473894), (40, 44736947), (2647, 676040), (5294, 338020), (10588, 169010), (13235, 135208), (16901, 105880), (21176, 84505), (26470, 67604), (33802, 52940)]