21994376

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{677}}^1$

素因数の和:845

約数の個数: 32

約数和(自身を含む): 42958080

約数和(自身を除く): 20963704

約数列:

[1, 2, 4, 8, 31, 62, 124, 131, 248, 262, 524, 677, 1048, 1354, 2708, 4061, 5416, 8122, 16244, 20987, 32488, 41974, 83948, 88687, 167896, 177374, 354748, 709496, 2749297, 5498594, 10997188, 21994376]

約数ペア:

[(1, 21994376), (2, 10997188), (4, 5498594), (8, 2749297), (31, 709496), (62, 354748), (124, 177374), (131, 167896), (248, 88687), (262, 83948), (524, 41974), (677, 32488), (1048, 20987), (1354, 16244), (2708, 8122), (4061, 5416)]