25977940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{499}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 57960000

約数和(自身を除く): 31982060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 380, 499, 548, 685, 998, 1370, 1996, 2495, 2603, 2740, 4990, 5206, 9481, 9980, 10412, 13015, 18962, 26030, 37924, 47405, 52060, 68363, 94810, 136726, 189620, 273452, 341815, 683630, 1298897, 1367260, 2597794, 5195588, 6494485, 12988970, 25977940]

約数ペア:

[(1, 25977940), (2, 12988970), (4, 6494485), (5, 5195588), (10, 2597794), (19, 1367260), (20, 1298897), (38, 683630), (76, 341815), (95, 273452), (137, 189620), (190, 136726), (274, 94810), (380, 68363), (499, 52060), (548, 47405), (685, 37924), (998, 26030), (1370, 18962), (1996, 13015), (2495, 10412), (2603, 9980), (2740, 9481), (4990, 5206)]