1280888

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 2786400

約数和(自身を除く): 1505512

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 257, 356, 514, 623, 712, 1028, 1246, 1799, 2056, 2492, 3598, 4984, 7196, 14392, 22873, 45746, 91492, 160111, 182984, 320222, 640444, 1280888]

約数ペア:

[(1, 1280888), (2, 640444), (4, 320222), (7, 182984), (8, 160111), (14, 91492), (28, 45746), (56, 22873), (89, 14392), (178, 7196), (257, 4984), (356, 3598), (514, 2492), (623, 2056), (712, 1799), (1028, 1246)]