21761972

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{4051}}^1$

素因数の和:4151

約数の個数: 24

約数和(自身を含む): 40844160

約数和(自身を除く): 19082188

約数列:

[1, 2, 4, 17, 34, 68, 79, 158, 316, 1343, 2686, 4051, 5372, 8102, 16204, 68867, 137734, 275468, 320029, 640058, 1280116, 5440493, 10880986, 21761972]

約数ペア:

[(1, 21761972), (2, 10880986), (4, 5440493), (17, 1280116), (34, 640058), (68, 320029), (79, 275468), (158, 137734), (316, 68867), (1343, 16204), (2686, 8102), (4051, 5372)]