641456

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{853}}^1$

素因数の和:908

約数の個数: 20

約数和(自身を含む): 1270752

約数和(自身を除く): 629296

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 853, 1706, 3412, 6824, 13648, 40091, 80182, 160364, 320728, 641456]

約数ペア:

[(1, 641456), (2, 320728), (4, 160364), (8, 80182), (16, 40091), (47, 13648), (94, 6824), (188, 3412), (376, 1706), (752, 853)]