2826640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 6662520

約数和(自身を除く): 3835880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 397, 445, 712, 794, 890, 1424, 1588, 1780, 1985, 3176, 3560, 3970, 6352, 7120, 7940, 15880, 31760, 35333, 70666, 141332, 176665, 282664, 353330, 565328, 706660, 1413320, 2826640]

約数ペア:

[(1, 2826640), (2, 1413320), (4, 706660), (5, 565328), (8, 353330), (10, 282664), (16, 176665), (20, 141332), (40, 70666), (80, 35333), (89, 31760), (178, 15880), (356, 7940), (397, 7120), (445, 6352), (712, 3970), (794, 3560), (890, 3176), (1424, 1985), (1588, 1780)]