25820840

素因数分解:

$2^3\times 5^1\times {\mathrm{645521}}^1$

素因数の和:645532

約数の個数: 16

約数和(自身を含む): 58096980

約数和(自身を除く): 32276140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 645521, 1291042, 2582084, 3227605, 5164168, 6455210, 12910420, 25820840]

約数ペア:

[(1, 25820840), (2, 12910420), (4, 6455210), (5, 5164168), (8, 3227605), (10, 2582084), (20, 1291042), (40, 645521)]