21359912

素因数分解:

$2^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1997}}^1$

素因数の和:2201

約数の個数: 32

約数和(自身を含む): 46033920

約数和(自身を除く): 24674008

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 191, 382, 764, 1337, 1528, 1997, 2674, 3994, 5348, 7988, 10696, 13979, 15976, 27958, 55916, 111832, 381427, 762854, 1525708, 2669989, 3051416, 5339978, 10679956, 21359912]

約数ペア:

[(1, 21359912), (2, 10679956), (4, 5339978), (7, 3051416), (8, 2669989), (14, 1525708), (28, 762854), (56, 381427), (191, 111832), (382, 55916), (764, 27958), (1337, 15976), (1528, 13979), (1997, 10696), (2674, 7988), (3994, 5348)]