21987966

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:566

約数の個数: 96

約数和(自身を含む): 60213888

約数和(自身を除く): 38225922

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 49, 66, 77, 78, 91, 98, 143, 147, 154, 182, 231, 273, 286, 294, 429, 462, 523, 539, 546, 637, 858, 1001, 1046, 1078, 1274, 1569, 1617, 1911, 2002, 3003, 3138, 3234, 3661, 3822, 5753, 6006, 6799, 7007, 7322, 10983, 11506, 13598, 14014, 17259, 20397, 21021, 21966, 25627, 34518, 40271, 40794, 42042, 47593, 51254, 74789, 76881, 80542, 95186, 120813, 142779, 149578, 153762, 224367, 241626, 281897, 285558, 333151, 448734, 523523, 563794, 666302, 845691, 999453, 1047046, 1570569, 1691382, 1998906, 3141138, 3664661, 7329322, 10993983, 21987966]

約数ペア:

[(1, 21987966), (2, 10993983), (3, 7329322), (6, 3664661), (7, 3141138), (11, 1998906), (13, 1691382), (14, 1570569), (21, 1047046), (22, 999453), (26, 845691), (33, 666302), (39, 563794), (42, 523523), (49, 448734), (66, 333151), (77, 285558), (78, 281897), (91, 241626), (98, 224367), (143, 153762), (147, 149578), (154, 142779), (182, 120813), (231, 95186), (273, 80542), (286, 76881), (294, 74789), (429, 51254), (462, 47593), (523, 42042), (539, 40794), (546, 40271), (637, 34518), (858, 25627), (1001, 21966), (1046, 21021), (1078, 20397), (1274, 17259), (1569, 14014), (1617, 13598), (1911, 11506), (2002, 10983), (3003, 7322), (3138, 7007), (3234, 6799), (3661, 6006), (3822, 5753)]