18643912

素因数分解:

$2^3\times 7^2\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 41040000

約数和(自身を除く): 22396088

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 199, 239, 392, 398, 478, 796, 956, 1393, 1592, 1673, 1912, 2786, 3346, 5572, 6692, 9751, 11144, 11711, 13384, 19502, 23422, 39004, 46844, 47561, 78008, 93688, 95122, 190244, 332927, 380488, 665854, 1331708, 2330489, 2663416, 4660978, 9321956, 18643912]

約数ペア:

[(1, 18643912), (2, 9321956), (4, 4660978), (7, 2663416), (8, 2330489), (14, 1331708), (28, 665854), (49, 380488), (56, 332927), (98, 190244), (196, 95122), (199, 93688), (239, 78008), (392, 47561), (398, 46844), (478, 39004), (796, 23422), (956, 19502), (1393, 13384), (1592, 11711), (1673, 11144), (1912, 9751), (2786, 6692), (3346, 5572)]