21584840

素因数分解:

$2^3\times 5^1\times {\mathrm{539621}}^1$

素因数の和:539632

約数の個数: 16

約数和(自身を含む): 48565980

約数和(自身を除く): 26981140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539621, 1079242, 2158484, 2698105, 4316968, 5396210, 10792420, 21584840]

約数ペア:

[(1, 21584840), (2, 10792420), (4, 5396210), (5, 4316968), (8, 2698105), (10, 2158484), (20, 1079242), (40, 539621)]