111091580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 238140000

約数和(自身を除く): 127048420

約数列:

[1, 2, 4, 5, 10, 20, 89, 139, 178, 278, 356, 445, 449, 556, 695, 890, 898, 1390, 1780, 1796, 2245, 2780, 4490, 8980, 12371, 24742, 39961, 49484, 61855, 62411, 79922, 123710, 124822, 159844, 199805, 247420, 249644, 312055, 399610, 624110, 799220, 1248220, 5554579, 11109158, 22218316, 27772895, 55545790, 111091580]

約数ペア:

[(1, 111091580), (2, 55545790), (4, 27772895), (5, 22218316), (10, 11109158), (20, 5554579), (89, 1248220), (139, 799220), (178, 624110), (278, 399610), (356, 312055), (445, 249644), (449, 247420), (556, 199805), (695, 159844), (890, 124822), (898, 123710), (1390, 79922), (1780, 62411), (1796, 61855), (2245, 49484), (2780, 39961), (4490, 24742), (8980, 12371)]