18962680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{607}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 28315400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 607, 710, 781, 1214, 1420, 1562, 2428, 2840, 3035, 3124, 3905, 4856, 6070, 6248, 6677, 7810, 12140, 13354, 15620, 24280, 26708, 31240, 33385, 43097, 53416, 66770, 86194, 133540, 172388, 215485, 267080, 344776, 430970, 474067, 861940, 948134, 1723880, 1896268, 2370335, 3792536, 4740670, 9481340, 18962680]

約数ペア:

[(1, 18962680), (2, 9481340), (4, 4740670), (5, 3792536), (8, 2370335), (10, 1896268), (11, 1723880), (20, 948134), (22, 861940), (40, 474067), (44, 430970), (55, 344776), (71, 267080), (88, 215485), (110, 172388), (142, 133540), (220, 86194), (284, 66770), (355, 53416), (440, 43097), (568, 33385), (607, 31240), (710, 26708), (781, 24280), (1214, 15620), (1420, 13354), (1562, 12140), (2428, 7810), (2840, 6677), (3035, 6248), (3124, 6070), (3905, 4856)]