21881418884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1519121}}^1$

素因数の和:1519415

約数の個数: 24

約数和(自身を含む): 41386959768

約数和(自身を除く): 19505540884

約数列:

[1, 2, 4, 13, 26, 52, 277, 554, 1108, 3601, 7202, 14404, 1519121, 3038242, 6076484, 19748573, 39497146, 78994292, 420796517, 841593034, 1683186068, 5470354721, 10940709442, 21881418884]

約数ペア:

[(1, 21881418884), (2, 10940709442), (4, 5470354721), (13, 1683186068), (26, 841593034), (52, 420796517), (277, 78994292), (554, 39497146), (1108, 19748573), (3601, 6076484), (7202, 3038242), (14404, 1519121)]