21257722012

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{6131}}^1\times {\mathrm{50989}}^1$

素因数の和:57141

約数の個数: 24

約数和(自身を含む): 39396505680

約数和(自身を除く): 18138783668

約数列:

[1, 2, 4, 17, 34, 68, 6131, 12262, 24524, 50989, 101978, 104227, 203956, 208454, 416908, 866813, 1733626, 3467252, 312613559, 625227118, 1250454236, 5314430503, 10628861006, 21257722012]

約数ペア:

[(1, 21257722012), (2, 10628861006), (4, 5314430503), (17, 1250454236), (34, 625227118), (68, 312613559), (6131, 3467252), (12262, 1733626), (24524, 866813), (50989, 416908), (101978, 208454), (104227, 203956)]