20739620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3041}}^1$

素因数の和:3092

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 28321756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3041, 3410, 6082, 6820, 12164, 15205, 30410, 33451, 60820, 66902, 94271, 133804, 167255, 188542, 334510, 377084, 471355, 669020, 942710, 1036981, 1885420, 2073962, 4147924, 5184905, 10369810, 20739620]

約数ペア:

[(1, 20739620), (2, 10369810), (4, 5184905), (5, 4147924), (10, 2073962), (11, 1885420), (20, 1036981), (22, 942710), (31, 669020), (44, 471355), (55, 377084), (62, 334510), (110, 188542), (124, 167255), (155, 133804), (220, 94271), (310, 66902), (341, 60820), (620, 33451), (682, 30410), (1364, 15205), (1705, 12164), (3041, 6820), (3410, 6082)]