81546320

素因数分解:

$2^4\times 5^1\times {\mathrm{1019329}}^1$

素因数の和:1019342

約数の個数: 20

約数和(自身を含む): 189595380

約数和(自身を除く): 108049060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1019329, 2038658, 4077316, 5096645, 8154632, 10193290, 16309264, 20386580, 40773160, 81546320]

約数ペア:

[(1, 81546320), (2, 40773160), (4, 20386580), (5, 16309264), (8, 10193290), (10, 8154632), (16, 5096645), (20, 4077316), (40, 2038658), (80, 1019329)]