28238960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8209}}^1$

素因数の和:8265

約数の個数: 40

約数和(自身を含む): 67190640

約数和(自身を除く): 38951680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8209, 16418, 32836, 41045, 65672, 82090, 131344, 164180, 328360, 352987, 656720, 705974, 1411948, 1764935, 2823896, 3529870, 5647792, 7059740, 14119480, 28238960]

約数ペア:

[(1, 28238960), (2, 14119480), (4, 7059740), (5, 5647792), (8, 3529870), (10, 2823896), (16, 1764935), (20, 1411948), (40, 705974), (43, 656720), (80, 352987), (86, 328360), (172, 164180), (215, 131344), (344, 82090), (430, 65672), (688, 41045), (860, 32836), (1720, 16418), (3440, 8209)]