18518800

素因数分解:

$2^4\times 5^2\times {\mathrm{67}}^1\times {\mathrm{691}}^1$

素因数の和:776

約数の個数: 60

約数和(自身を含む): 45220816

約数和(自身を除く): 26702016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 67, 80, 100, 134, 200, 268, 335, 400, 536, 670, 691, 1072, 1340, 1382, 1675, 2680, 2764, 3350, 3455, 5360, 5528, 6700, 6910, 11056, 13400, 13820, 17275, 26800, 27640, 34550, 46297, 55280, 69100, 92594, 138200, 185188, 231485, 276400, 370376, 462970, 740752, 925940, 1157425, 1851880, 2314850, 3703760, 4629700, 9259400, 18518800]

約数ペア:

[(1, 18518800), (2, 9259400), (4, 4629700), (5, 3703760), (8, 2314850), (10, 1851880), (16, 1157425), (20, 925940), (25, 740752), (40, 462970), (50, 370376), (67, 276400), (80, 231485), (100, 185188), (134, 138200), (200, 92594), (268, 69100), (335, 55280), (400, 46297), (536, 34550), (670, 27640), (691, 26800), (1072, 17275), (1340, 13820), (1382, 13400), (1675, 11056), (2680, 6910), (2764, 6700), (3350, 5528), (3455, 5360)]