20825588

素因数分解:

$2^2\times 7^3\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 43612800

約数和(自身を除く): 22787212

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 343, 353, 602, 686, 706, 1204, 1372, 1412, 2107, 2471, 4214, 4942, 8428, 9884, 14749, 15179, 17297, 29498, 30358, 34594, 58996, 60716, 69188, 106253, 121079, 212506, 242158, 425012, 484316, 743771, 1487542, 2975084, 5206397, 10412794, 20825588]

約数ペア:

[(1, 20825588), (2, 10412794), (4, 5206397), (7, 2975084), (14, 1487542), (28, 743771), (43, 484316), (49, 425012), (86, 242158), (98, 212506), (172, 121079), (196, 106253), (301, 69188), (343, 60716), (353, 58996), (602, 34594), (686, 30358), (706, 29498), (1204, 17297), (1372, 15179), (1412, 14749), (2107, 9884), (2471, 8428), (4214, 4942)]