19521873

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 34744320

約数和(自身を除く): 15222447

約数列:

[1, 3, 7, 9, 19, 21, 47, 57, 63, 133, 141, 171, 329, 347, 399, 423, 893, 987, 1041, 1197, 2429, 2679, 2961, 3123, 6251, 6593, 7287, 8037, 16309, 18753, 19779, 21861, 46151, 48927, 56259, 59337, 114163, 138453, 146781, 309871, 342489, 415359, 929613, 1027467, 2169097, 2788839, 6507291, 19521873]

約数ペア:

[(1, 19521873), (3, 6507291), (7, 2788839), (9, 2169097), (19, 1027467), (21, 929613), (47, 415359), (57, 342489), (63, 309871), (133, 146781), (141, 138453), (171, 114163), (329, 59337), (347, 56259), (399, 48927), (423, 46151), (893, 21861), (987, 19779), (1041, 18753), (1197, 16309), (2429, 8037), (2679, 7287), (2961, 6593), (3123, 6251)]