20940220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{401}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 50516928

約数和(自身を除く): 29576708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 373, 401, 746, 802, 1492, 1604, 1865, 2005, 2611, 2807, 3730, 4010, 5222, 5614, 7460, 8020, 10444, 11228, 13055, 14035, 26110, 28070, 52220, 56140, 149573, 299146, 598292, 747865, 1047011, 1495730, 2094022, 2991460, 4188044, 5235055, 10470110, 20940220]

約数ペア:

[(1, 20940220), (2, 10470110), (4, 5235055), (5, 4188044), (7, 2991460), (10, 2094022), (14, 1495730), (20, 1047011), (28, 747865), (35, 598292), (70, 299146), (140, 149573), (373, 56140), (401, 52220), (746, 28070), (802, 26110), (1492, 14035), (1604, 13055), (1865, 11228), (2005, 10444), (2611, 8020), (2807, 7460), (3730, 5614), (4010, 5222)]