9971990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{433}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 21373632

約数和(自身を除く): 11401642

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 235, 245, 329, 433, 470, 490, 658, 866, 1645, 2165, 2303, 3031, 3290, 4330, 4606, 6062, 11515, 15155, 20351, 21217, 23030, 30310, 40702, 42434, 101755, 106085, 142457, 203510, 212170, 284914, 712285, 997199, 1424570, 1994398, 4985995, 9971990]

約数ペア:

[(1, 9971990), (2, 4985995), (5, 1994398), (7, 1424570), (10, 997199), (14, 712285), (35, 284914), (47, 212170), (49, 203510), (70, 142457), (94, 106085), (98, 101755), (235, 42434), (245, 40702), (329, 30310), (433, 23030), (470, 21217), (490, 20351), (658, 15155), (866, 11515), (1645, 6062), (2165, 4606), (2303, 4330), (3031, 3290)]