20978250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 53149824

約数和(自身を除く): 32171574

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 83, 125, 150, 166, 249, 250, 337, 375, 415, 498, 674, 750, 830, 1011, 1245, 1685, 2022, 2075, 2490, 3370, 4150, 5055, 6225, 8425, 10110, 10375, 12450, 16850, 20750, 25275, 27971, 31125, 42125, 50550, 55942, 62250, 83913, 84250, 126375, 139855, 167826, 252750, 279710, 419565, 699275, 839130, 1398550, 2097825, 3496375, 4195650, 6992750, 10489125, 20978250]

約数ペア:

[(1, 20978250), (2, 10489125), (3, 6992750), (5, 4195650), (6, 3496375), (10, 2097825), (15, 1398550), (25, 839130), (30, 699275), (50, 419565), (75, 279710), (83, 252750), (125, 167826), (150, 139855), (166, 126375), (249, 84250), (250, 83913), (337, 62250), (375, 55942), (415, 50550), (498, 42125), (674, 31125), (750, 27971), (830, 25275), (1011, 20750), (1245, 16850), (1685, 12450), (2022, 10375), (2075, 10110), (2490, 8425), (3370, 6225), (4150, 5055)]