20825428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12919}}^1$

素因数の和:12967

約数の個数: 24

約数和(自身を含む): 40517120

約数和(自身を除く): 19691692

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 12919, 25838, 51676, 167947, 335894, 400489, 671788, 800978, 1601956, 5206357, 10412714, 20825428]

約数ペア:

[(1, 20825428), (2, 10412714), (4, 5206357), (13, 1601956), (26, 800978), (31, 671788), (52, 400489), (62, 335894), (124, 167947), (403, 51676), (806, 25838), (1612, 12919)]