20687590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 64

約数和(自身を含む): 47236608

約数和(自身を除く): 26549018

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 67, 70, 77, 110, 134, 154, 335, 385, 401, 469, 670, 737, 770, 802, 938, 1474, 2005, 2345, 2807, 3685, 4010, 4411, 4690, 5159, 5614, 7370, 8822, 10318, 14035, 22055, 25795, 26867, 28070, 30877, 44110, 51590, 53734, 61754, 134335, 154385, 188069, 268670, 295537, 308770, 376138, 591074, 940345, 1477685, 1880690, 2068759, 2955370, 4137518, 10343795, 20687590]

約数ペア:

[(1, 20687590), (2, 10343795), (5, 4137518), (7, 2955370), (10, 2068759), (11, 1880690), (14, 1477685), (22, 940345), (35, 591074), (55, 376138), (67, 308770), (70, 295537), (77, 268670), (110, 188069), (134, 154385), (154, 134335), (335, 61754), (385, 53734), (401, 51590), (469, 44110), (670, 30877), (737, 28070), (770, 26867), (802, 25795), (938, 22055), (1474, 14035), (2005, 10318), (2345, 8822), (2807, 7370), (3685, 5614), (4010, 5159), (4411, 4690)]