2005217690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{20773}}^1$

素因数の和:20991

約数の個数: 48

約数和(自身を含む): 4220196552

約数和(自身を除く): 2214978862

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 197, 245, 394, 490, 985, 1379, 1970, 2758, 6895, 9653, 13790, 19306, 20773, 41546, 48265, 96530, 103865, 145411, 207730, 290822, 727055, 1017877, 1454110, 2035754, 4092281, 5089385, 8184562, 10178770, 20461405, 28645967, 40922810, 57291934, 143229835, 200521769, 286459670, 401043538, 1002608845, 2005217690]

約数ペア:

[(1, 2005217690), (2, 1002608845), (5, 401043538), (7, 286459670), (10, 200521769), (14, 143229835), (35, 57291934), (49, 40922810), (70, 28645967), (98, 20461405), (197, 10178770), (245, 8184562), (394, 5089385), (490, 4092281), (985, 2035754), (1379, 1454110), (1970, 1017877), (2758, 727055), (6895, 290822), (9653, 207730), (13790, 145411), (19306, 103865), (20773, 96530), (41546, 48265)]