21307328

素因数分解:

$2^6\times 7^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:457

約数の個数: 56

約数和(自身を含む): 48768000

約数和(自身を除く): 27460672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 199, 224, 239, 398, 448, 478, 796, 956, 1393, 1592, 1673, 1912, 2786, 3184, 3346, 3824, 5572, 6368, 6692, 7648, 11144, 12736, 13384, 15296, 22288, 26768, 44576, 47561, 53536, 89152, 95122, 107072, 190244, 332927, 380488, 665854, 760976, 1331708, 1521952, 2663416, 3043904, 5326832, 10653664, 21307328]

約数ペア:

[(1, 21307328), (2, 10653664), (4, 5326832), (7, 3043904), (8, 2663416), (14, 1521952), (16, 1331708), (28, 760976), (32, 665854), (56, 380488), (64, 332927), (112, 190244), (199, 107072), (224, 95122), (239, 89152), (398, 53536), (448, 47561), (478, 44576), (796, 26768), (956, 22288), (1393, 15296), (1592, 13384), (1673, 12736), (1912, 11144), (2786, 7648), (3184, 6692), (3346, 6368), (3824, 5572)]