81278864

素因数分解:

$2^4\times {\mathrm{307}}^1\times {\mathrm{16547}}^1$

素因数の和:16862

約数の個数: 20

約数和(自身を含む): 158000304

約数和(自身を除く): 76721440

約数列:

[1, 2, 4, 8, 16, 307, 614, 1228, 2456, 4912, 16547, 33094, 66188, 132376, 264752, 5079929, 10159858, 20319716, 40639432, 81278864]

約数ペア:

[(1, 81278864), (2, 40639432), (4, 20319716), (8, 10159858), (16, 5079929), (307, 264752), (614, 132376), (1228, 66188), (2456, 33094), (4912, 16547)]