28907560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65699}}^1$

素因数の和:65721

約数の個数: 32

約数和(自身を含む): 70956000

約数和(自身を除く): 42048440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65699, 131398, 262796, 328495, 525592, 656990, 722689, 1313980, 1445378, 2627960, 2890756, 3613445, 5781512, 7226890, 14453780, 28907560]

約数ペア:

[(1, 28907560), (2, 14453780), (4, 7226890), (5, 5781512), (8, 3613445), (10, 2890756), (11, 2627960), (20, 1445378), (22, 1313980), (40, 722689), (44, 656990), (55, 525592), (88, 328495), (110, 262796), (220, 131398), (440, 65699)]