21140236

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21397}}^1$

素因数の和:21433

約数の個数: 24

約数和(自身を含む): 41940080

約数和(自身を除く): 20799844

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21397, 42794, 85588, 278161, 406543, 556322, 813086, 1112644, 1626172, 5285059, 10570118, 21140236]

約数ペア:

[(1, 21140236), (2, 10570118), (4, 5285059), (13, 1626172), (19, 1112644), (26, 813086), (38, 556322), (52, 406543), (76, 278161), (247, 85588), (494, 42794), (988, 21397)]