20269640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4649}}^1$

素因数の和:4769

約数の個数: 32

約数和(自身を含む): 46035000

約数和(自身を除く): 25765360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4649, 9298, 18596, 23245, 37192, 46490, 92980, 185960, 506741, 1013482, 2026964, 2533705, 4053928, 5067410, 10134820, 20269640]

約数ペア:

[(1, 20269640), (2, 10134820), (4, 5067410), (5, 4053928), (8, 2533705), (10, 2026964), (20, 1013482), (40, 506741), (109, 185960), (218, 92980), (436, 46490), (545, 37192), (872, 23245), (1090, 18596), (2180, 9298), (4360, 4649)]