2012128025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 2816784000

約数和(自身を除く): 804655975

約数列:

[1, 5, 19, 25, 29, 43, 79, 95, 145, 215, 395, 475, 551, 725, 817, 1075, 1247, 1501, 1849, 1975, 2291, 2755, 3397, 4085, 6235, 7505, 9245, 11455, 13775, 16985, 20425, 23693, 31175, 35131, 37525, 43529, 46225, 53621, 57275, 64543, 84925, 98513, 118465, 146071, 175655, 217645, 268105, 322715, 492565, 592325, 730355, 878275, 1018799, 1088225, 1340525, 1613575, 1871747, 2462825, 2775349, 3651775, 4236059, 5093995, 9358735, 13876745, 21180295, 25469975, 46793675, 69383725, 80485121, 105901475, 402425605, 2012128025]

約数ペア:

[(1, 2012128025), (5, 402425605), (19, 105901475), (25, 80485121), (29, 69383725), (43, 46793675), (79, 25469975), (95, 21180295), (145, 13876745), (215, 9358735), (395, 5093995), (475, 4236059), (551, 3651775), (725, 2775349), (817, 2462825), (1075, 1871747), (1247, 1613575), (1501, 1340525), (1849, 1088225), (1975, 1018799), (2291, 878275), (2755, 730355), (3397, 592325), (4085, 492565), (6235, 322715), (7505, 268105), (9245, 217645), (11455, 175655), (13775, 146071), (16985, 118465), (20425, 98513), (23693, 84925), (31175, 64543), (35131, 57275), (37525, 53621), (43529, 46225)]