81057850

素因数分解:

$2^1\times 5^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 154677600

約数和(自身を除く): 73619750

約数列:

[1, 2, 5, 10, 25, 50, 107, 109, 139, 214, 218, 278, 535, 545, 695, 1070, 1090, 1390, 2675, 2725, 3475, 5350, 5450, 6950, 11663, 14873, 15151, 23326, 29746, 30302, 58315, 74365, 75755, 116630, 148730, 151510, 291575, 371825, 378775, 583150, 743650, 757550, 1621157, 3242314, 8105785, 16211570, 40528925, 81057850]

約数ペア:

[(1, 81057850), (2, 40528925), (5, 16211570), (10, 8105785), (25, 3242314), (50, 1621157), (107, 757550), (109, 743650), (139, 583150), (214, 378775), (218, 371825), (278, 291575), (535, 151510), (545, 148730), (695, 116630), (1070, 75755), (1090, 74365), (1390, 58315), (2675, 30302), (2725, 29746), (3475, 23326), (5350, 15151), (5450, 14873), (6950, 11663)]