21304840

素因数分解:

$2^3\times 5^1\times {\mathrm{532621}}^1$

素因数の和:532632

約数の個数: 16

約数和(自身を含む): 47935980

約数和(自身を除く): 26631140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532621, 1065242, 2130484, 2663105, 4260968, 5326210, 10652420, 21304840]

約数ペア:

[(1, 21304840), (2, 10652420), (4, 5326210), (5, 4260968), (8, 2663105), (10, 2130484), (20, 1065242), (40, 532621)]