64887880

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{3331}}^1$

素因数の和:3829

約数の個数: 32

約数和(自身を含む): 146341440

約数和(自身を除く): 81453560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3331, 3896, 4870, 6662, 9740, 13324, 16655, 19480, 26648, 33310, 66620, 133240, 1622197, 3244394, 6488788, 8110985, 12977576, 16221970, 32443940, 64887880]

約数ペア:

[(1, 64887880), (2, 32443940), (4, 16221970), (5, 12977576), (8, 8110985), (10, 6488788), (20, 3244394), (40, 1622197), (487, 133240), (974, 66620), (1948, 33310), (2435, 26648), (3331, 19480), (3896, 16655), (4870, 13324), (6662, 9740)]