20682828

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 55351296

約数和(自身を除く): 34668468

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 43, 62, 86, 93, 124, 129, 172, 186, 258, 279, 372, 387, 431, 516, 558, 774, 862, 1116, 1293, 1333, 1548, 1724, 2586, 2666, 3879, 3999, 5172, 5332, 7758, 7998, 11997, 13361, 15516, 15996, 18533, 23994, 26722, 37066, 40083, 47988, 53444, 55599, 74132, 80166, 111198, 120249, 160332, 166797, 222396, 240498, 333594, 480996, 574523, 667188, 1149046, 1723569, 2298092, 3447138, 5170707, 6894276, 10341414, 20682828]

約数ペア:

[(1, 20682828), (2, 10341414), (3, 6894276), (4, 5170707), (6, 3447138), (9, 2298092), (12, 1723569), (18, 1149046), (31, 667188), (36, 574523), (43, 480996), (62, 333594), (86, 240498), (93, 222396), (124, 166797), (129, 160332), (172, 120249), (186, 111198), (258, 80166), (279, 74132), (372, 55599), (387, 53444), (431, 47988), (516, 40083), (558, 37066), (774, 26722), (862, 23994), (1116, 18533), (1293, 15996), (1333, 15516), (1548, 13361), (1724, 11997), (2586, 7998), (2666, 7758), (3879, 5332), (3999, 5172)]