51203080

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1997}}^1$

素因数の和:2649

約数の個数: 32

約数和(自身を含む): 115444440

約数和(自身を除く): 64241360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 1997, 2564, 3205, 3994, 5128, 6410, 7988, 9985, 12820, 15976, 19970, 25640, 39940, 79880, 1280077, 2560154, 5120308, 6400385, 10240616, 12800770, 25601540, 51203080]

約数ペア:

[(1, 51203080), (2, 25601540), (4, 12800770), (5, 10240616), (8, 6400385), (10, 5120308), (20, 2560154), (40, 1280077), (641, 79880), (1282, 39940), (1997, 25640), (2564, 19970), (3205, 15976), (3994, 12820), (5128, 9985), (6410, 7988)]