21280194

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:663

約数の個数: 48

約数和(自身を含む): 50004864

約数和(自身を除く): 28724670

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 211, 234, 422, 431, 633, 862, 1266, 1293, 1899, 2586, 2743, 3798, 3879, 5486, 5603, 7758, 8229, 11206, 16458, 16809, 24687, 33618, 49374, 50427, 90941, 100854, 181882, 272823, 545646, 818469, 1182233, 1636938, 2364466, 3546699, 7093398, 10640097, 21280194]

約数ペア:

[(1, 21280194), (2, 10640097), (3, 7093398), (6, 3546699), (9, 2364466), (13, 1636938), (18, 1182233), (26, 818469), (39, 545646), (78, 272823), (117, 181882), (211, 100854), (234, 90941), (422, 50427), (431, 49374), (633, 33618), (862, 24687), (1266, 16809), (1293, 16458), (1899, 11206), (2586, 8229), (2743, 7758), (3798, 5603), (3879, 5486)]