2018987920

素因数分解:

$2^4\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{15569}}^1$

素因数の和:17203

約数の個数: 40

約数和(自身を含む): 4697344440

約数和(自身を除く): 2678356520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1621, 3242, 6484, 8105, 12968, 15569, 16210, 25936, 31138, 32420, 62276, 64840, 77845, 124552, 129680, 155690, 249104, 311380, 622760, 1245520, 25237349, 50474698, 100949396, 126186745, 201898792, 252373490, 403797584, 504746980, 1009493960, 2018987920]

約数ペア:

[(1, 2018987920), (2, 1009493960), (4, 504746980), (5, 403797584), (8, 252373490), (10, 201898792), (16, 126186745), (20, 100949396), (40, 50474698), (80, 25237349), (1621, 1245520), (3242, 622760), (6484, 311380), (8105, 249104), (12968, 155690), (15569, 129680), (16210, 124552), (25936, 77845), (31138, 64840), (32420, 62276)]