81642780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{453571}}^1$

素因数の和:453586

約数の個数: 36

約数和(自身を含む): 247650312

約数和(自身を除く): 166007532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 453571, 907142, 1360713, 1814284, 2267855, 2721426, 4082139, 4535710, 5442852, 6803565, 8164278, 9071420, 13607130, 16328556, 20410695, 27214260, 40821390, 81642780]

約数ペア:

[(1, 81642780), (2, 40821390), (3, 27214260), (4, 20410695), (5, 16328556), (6, 13607130), (9, 9071420), (10, 8164278), (12, 6803565), (15, 5442852), (18, 4535710), (20, 4082139), (30, 2721426), (36, 2267855), (45, 1814284), (60, 1360713), (90, 907142), (180, 453571)]