21496982680

素因数分解:

$2^3\times 5^1\times {\mathrm{4289}}^1\times {\mathrm{125303}}^1$

素因数の和:129603

約数の個数: 32

約数和(自身を含む): 48379874400

約数和(自身を除く): 26882891720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4289, 8578, 17156, 21445, 34312, 42890, 85780, 125303, 171560, 250606, 501212, 626515, 1002424, 1253030, 2506060, 5012120, 537424567, 1074849134, 2149698268, 2687122835, 4299396536, 5374245670, 10748491340, 21496982680]

約数ペア:

[(1, 21496982680), (2, 10748491340), (4, 5374245670), (5, 4299396536), (8, 2687122835), (10, 2149698268), (20, 1074849134), (40, 537424567), (4289, 5012120), (8578, 2506060), (17156, 1253030), (21445, 1002424), (34312, 626515), (42890, 501212), (85780, 250606), (125303, 171560)]