21789993

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 31997952

約数和(自身を除く): 10207959

約数列:

[1, 3, 23, 31, 61, 69, 93, 167, 183, 501, 713, 1403, 1891, 2139, 3841, 4209, 5177, 5673, 10187, 11523, 15531, 30561, 43493, 119071, 130479, 234301, 315797, 357213, 702903, 947391, 7263331, 21789993]

約数ペア:

[(1, 21789993), (3, 7263331), (23, 947391), (31, 702903), (61, 357213), (69, 315797), (93, 234301), (167, 130479), (183, 119071), (501, 43493), (713, 30561), (1403, 15531), (1891, 11523), (2139, 10187), (3841, 5673), (4209, 5177)]