219921790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{971}}^1$

素因数の和:1089

約数の個数: 64

約数和(自身を含む): 453496320

約数和(自身を除く): 233574530

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 71, 110, 142, 145, 290, 319, 355, 638, 710, 781, 971, 1562, 1595, 1942, 2059, 3190, 3905, 4118, 4855, 7810, 9710, 10295, 10681, 20590, 21362, 22649, 28159, 45298, 53405, 56318, 68941, 106810, 113245, 137882, 140795, 226490, 281590, 309749, 344705, 619498, 689410, 758351, 1516702, 1548745, 1999289, 3097490, 3791755, 3998578, 7583510, 9996445, 19992890, 21992179, 43984358, 109960895, 219921790]

約数ペア:

[(1, 219921790), (2, 109960895), (5, 43984358), (10, 21992179), (11, 19992890), (22, 9996445), (29, 7583510), (55, 3998578), (58, 3791755), (71, 3097490), (110, 1999289), (142, 1548745), (145, 1516702), (290, 758351), (319, 689410), (355, 619498), (638, 344705), (710, 309749), (781, 281590), (971, 226490), (1562, 140795), (1595, 137882), (1942, 113245), (2059, 106810), (3190, 68941), (3905, 56318), (4118, 53405), (4855, 45298), (7810, 28159), (9710, 22649), (10295, 21362), (10681, 20590)]