21921016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1609}}^1$

素因数の和:1759

約数の個数: 32

約数和(自身を含む): 44629200

約数和(自身を除く): 22708184

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 131, 262, 524, 1048, 1609, 1703, 3218, 3406, 6436, 6812, 12872, 13624, 20917, 41834, 83668, 167336, 210779, 421558, 843116, 1686232, 2740127, 5480254, 10960508, 21921016]

約数ペア:

[(1, 21921016), (2, 10960508), (4, 5480254), (8, 2740127), (13, 1686232), (26, 843116), (52, 421558), (104, 210779), (131, 167336), (262, 83668), (524, 41834), (1048, 20917), (1609, 13624), (1703, 12872), (3218, 6812), (3406, 6436)]