21082220

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15733}}^1$

素因数の和:15809

約数の個数: 24

約数和(自身を含む): 44936304

約数和(自身を除く): 23854084

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15733, 31466, 62932, 78665, 157330, 314660, 1054111, 2108222, 4216444, 5270555, 10541110, 21082220]

約数ペア:

[(1, 21082220), (2, 10541110), (4, 5270555), (5, 4216444), (10, 2108222), (20, 1054111), (67, 314660), (134, 157330), (268, 78665), (335, 62932), (670, 31466), (1340, 15733)]