21577052

素因数分解:

$2^2\times 7^2\times {\mathrm{283}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 36

約数和(自身を含む): 44193240

約数和(自身を除く): 22616188

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 283, 389, 566, 778, 1132, 1556, 1981, 2723, 3962, 5446, 7924, 10892, 13867, 19061, 27734, 38122, 55468, 76244, 110087, 220174, 440348, 770609, 1541218, 3082436, 5394263, 10788526, 21577052]

約数ペア:

[(1, 21577052), (2, 10788526), (4, 5394263), (7, 3082436), (14, 1541218), (28, 770609), (49, 440348), (98, 220174), (196, 110087), (283, 76244), (389, 55468), (566, 38122), (778, 27734), (1132, 19061), (1556, 13867), (1981, 10892), (2723, 7924), (3962, 5446)]