281336080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{49531}}^1$

素因数の和:49615

約数の個数: 40

約数和(自身を含む): 663332544

約数和(自身を除く): 381996464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 49531, 99062, 198124, 247655, 396248, 495310, 792496, 990620, 1981240, 3516701, 3962480, 7033402, 14066804, 17583505, 28133608, 35167010, 56267216, 70334020, 140668040, 281336080]

約数ペア:

[(1, 281336080), (2, 140668040), (4, 70334020), (5, 56267216), (8, 35167010), (10, 28133608), (16, 17583505), (20, 14066804), (40, 7033402), (71, 3962480), (80, 3516701), (142, 1981240), (284, 990620), (355, 792496), (568, 495310), (710, 396248), (1136, 247655), (1420, 198124), (2840, 99062), (5680, 49531)]