19812782

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 35750400

約数和(自身を除く): 15937618

約数列:

[1, 2, 11, 19, 22, 31, 38, 62, 121, 139, 209, 242, 278, 341, 418, 589, 682, 1178, 1529, 2299, 2641, 3058, 3751, 4309, 4598, 5282, 6479, 7502, 8618, 12958, 16819, 29051, 33638, 47399, 58102, 71269, 81871, 94798, 142538, 163742, 319561, 521389, 639122, 900581, 1042778, 1801162, 9906391, 19812782]

約数ペア:

[(1, 19812782), (2, 9906391), (11, 1801162), (19, 1042778), (22, 900581), (31, 639122), (38, 521389), (62, 319561), (121, 163742), (139, 142538), (209, 94798), (242, 81871), (278, 71269), (341, 58102), (418, 47399), (589, 33638), (682, 29051), (1178, 16819), (1529, 12958), (2299, 8618), (2641, 7502), (3058, 6479), (3751, 5282), (4309, 4598)]