20491450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{461}}^1$

素因数の和:607

約数の個数: 48

約数和(自身を含む): 43997184

約数和(自身を除く): 23505734

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 127, 175, 254, 350, 461, 635, 889, 922, 1270, 1778, 2305, 3175, 3227, 4445, 4610, 6350, 6454, 8890, 11525, 16135, 22225, 23050, 32270, 44450, 58547, 80675, 117094, 161350, 292735, 409829, 585470, 819658, 1463675, 2049145, 2927350, 4098290, 10245725, 20491450]

約数ペア:

[(1, 20491450), (2, 10245725), (5, 4098290), (7, 2927350), (10, 2049145), (14, 1463675), (25, 819658), (35, 585470), (50, 409829), (70, 292735), (127, 161350), (175, 117094), (254, 80675), (350, 58547), (461, 44450), (635, 32270), (889, 23050), (922, 22225), (1270, 16135), (1778, 11525), (2305, 8890), (3175, 6454), (3227, 6350), (4445, 4610)]