21114140

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19919}}^1$

素因数の和:19981

約数の個数: 24

約数和(自身を含む): 45178560

約数和(自身を除く): 24064420

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19919, 39838, 79676, 99595, 199190, 398380, 1055707, 2111414, 4222828, 5278535, 10557070, 21114140]

約数ペア:

[(1, 21114140), (2, 10557070), (4, 5278535), (5, 4222828), (10, 2111414), (20, 1055707), (53, 398380), (106, 199190), (212, 99595), (265, 79676), (530, 39838), (1060, 19919)]