21138500

素因数分解:

$2^2\times 5^3\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:717

約数の個数: 48

約数和(自身を含む): 46929792

約数和(自身を除く): 25791292

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 67, 100, 125, 134, 250, 268, 335, 500, 631, 670, 1262, 1340, 1675, 2524, 3155, 3350, 6310, 6700, 8375, 12620, 15775, 16750, 31550, 33500, 42277, 63100, 78875, 84554, 157750, 169108, 211385, 315500, 422770, 845540, 1056925, 2113850, 4227700, 5284625, 10569250, 21138500]

約数ペア:

[(1, 21138500), (2, 10569250), (4, 5284625), (5, 4227700), (10, 2113850), (20, 1056925), (25, 845540), (50, 422770), (67, 315500), (100, 211385), (125, 169108), (134, 157750), (250, 84554), (268, 78875), (335, 63100), (500, 42277), (631, 33500), (670, 31550), (1262, 16750), (1340, 15775), (1675, 12620), (2524, 8375), (3155, 6700), (3350, 6310)]