21346288

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78479}}^1$

素因数の和:78504

約数の個数: 20

約数和(自身を含む): 43791840

約数和(自身を除く): 22445552

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78479, 156958, 313916, 627832, 1255664, 1334143, 2668286, 5336572, 10673144, 21346288]

約数ペア:

[(1, 21346288), (2, 10673144), (4, 5336572), (8, 2668286), (16, 1334143), (17, 1255664), (34, 627832), (68, 313916), (136, 156958), (272, 78479)]