21997648

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{33533}}^1$

素因数の和:33582

約数の個数: 20

約数和(自身を含む): 43661268

約数和(自身を除く): 21663620

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 33533, 67066, 134132, 268264, 536528, 1374853, 2749706, 5499412, 10998824, 21997648]

約数ペア:

[(1, 21997648), (2, 10998824), (4, 5499412), (8, 2749706), (16, 1374853), (41, 536528), (82, 268264), (164, 134132), (328, 67066), (656, 33533)]