20321140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3923}}^1$

素因数の和:3976

約数の個数: 48

約数和(自身を含む): 50101632

約数和(自身を除く): 29780492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3923, 5180, 7846, 15692, 19615, 27461, 39230, 54922, 78460, 109844, 137305, 145151, 274610, 290302, 549220, 580604, 725755, 1016057, 1451510, 2032114, 2903020, 4064228, 5080285, 10160570, 20321140]

約数ペア:

[(1, 20321140), (2, 10160570), (4, 5080285), (5, 4064228), (7, 2903020), (10, 2032114), (14, 1451510), (20, 1016057), (28, 725755), (35, 580604), (37, 549220), (70, 290302), (74, 274610), (140, 145151), (148, 137305), (185, 109844), (259, 78460), (370, 54922), (518, 39230), (740, 27461), (1036, 19615), (1295, 15692), (2590, 7846), (3923, 5180)]