21855268

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{971}}^1$

素因数の和:1323

約数の個数: 24

約数和(自身を含む): 40660704

約数和(自身を除く): 18805436

約数列:

[1, 2, 4, 17, 34, 68, 331, 662, 971, 1324, 1942, 3884, 5627, 11254, 16507, 22508, 33014, 66028, 321401, 642802, 1285604, 5463817, 10927634, 21855268]

約数ペア:

[(1, 21855268), (2, 10927634), (4, 5463817), (17, 1285604), (34, 642802), (68, 321401), (331, 66028), (662, 33014), (971, 22508), (1324, 16507), (1942, 11254), (3884, 5627)]