21154245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 40943616

約数和(自身を除く): 19789371

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 67, 93, 97, 105, 155, 201, 217, 291, 335, 465, 469, 485, 651, 679, 1005, 1085, 1407, 1455, 2037, 2077, 2345, 3007, 3255, 3395, 6231, 6499, 7035, 9021, 10185, 10385, 14539, 15035, 19497, 21049, 31155, 32495, 43617, 45105, 45493, 63147, 72695, 97485, 105245, 136479, 201469, 218085, 227465, 315735, 604407, 682395, 1007345, 1410283, 3022035, 4230849, 7051415, 21154245]

約数ペア:

[(1, 21154245), (3, 7051415), (5, 4230849), (7, 3022035), (15, 1410283), (21, 1007345), (31, 682395), (35, 604407), (67, 315735), (93, 227465), (97, 218085), (105, 201469), (155, 136479), (201, 105245), (217, 97485), (291, 72695), (335, 63147), (465, 45493), (469, 45105), (485, 43617), (651, 32495), (679, 31155), (1005, 21049), (1085, 19497), (1407, 15035), (1455, 14539), (2037, 10385), (2077, 10185), (2345, 9021), (3007, 7035), (3255, 6499), (3395, 6231)]