20658547

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:188

約数の個数: 32

約数和(自身を含む): 26812800

約数和(自身を除く): 6154253

約数列:

[1, 7, 13, 41, 49, 91, 113, 287, 343, 533, 637, 791, 1469, 2009, 3731, 4459, 4633, 5537, 10283, 14063, 26117, 32431, 38759, 60229, 71981, 182819, 227017, 421603, 503867, 1589119, 2951221, 20658547]

約数ペア:

[(1, 20658547), (7, 2951221), (13, 1589119), (41, 503867), (49, 421603), (91, 227017), (113, 182819), (287, 71981), (343, 60229), (533, 38759), (637, 32431), (791, 26117), (1469, 14063), (2009, 10283), (3731, 5537), (4459, 4633)]