20065420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10343}}^1$

素因数の和:10449

約数の個数: 24

約数和(自身を含む): 42575904

約数和(自身を除く): 22510484

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10343, 20686, 41372, 51715, 103430, 206860, 1003271, 2006542, 4013084, 5016355, 10032710, 20065420]

約数ペア:

[(1, 20065420), (2, 10032710), (4, 5016355), (5, 4013084), (10, 2006542), (20, 1003271), (97, 206860), (194, 103430), (388, 51715), (485, 41372), (970, 20686), (1940, 10343)]