280194640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{318403}}^1$

素因数の和:318427

約数の個数: 40

約数和(自身を含む): 710677728

約数和(自身を除く): 430483088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 318403, 636806, 1273612, 1592015, 2547224, 3184030, 3502433, 5094448, 6368060, 7004866, 12736120, 14009732, 17512165, 25472240, 28019464, 35024330, 56038928, 70048660, 140097320, 280194640]

約数ペア:

[(1, 280194640), (2, 140097320), (4, 70048660), (5, 56038928), (8, 35024330), (10, 28019464), (11, 25472240), (16, 17512165), (20, 14009732), (22, 12736120), (40, 7004866), (44, 6368060), (55, 5094448), (80, 3502433), (88, 3184030), (110, 2547224), (176, 1592015), (220, 1273612), (440, 636806), (880, 318403)]