21335525

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 6162715

約数列:

[1, 5, 25, 43, 89, 215, 223, 445, 1075, 1115, 2225, 3827, 5575, 9589, 19135, 19847, 47945, 95675, 99235, 239725, 496175, 853421, 4267105, 21335525]

約数ペア:

[(1, 21335525), (5, 4267105), (25, 853421), (43, 496175), (89, 239725), (215, 99235), (223, 95675), (445, 47945), (1075, 19847), (1115, 19135), (2225, 9589), (3827, 5575)]