21685846

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 43642368

約数和(自身を除く): 21956522

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 43, 86, 91, 119, 163, 182, 221, 238, 301, 326, 442, 559, 602, 731, 1118, 1141, 1462, 1547, 2119, 2282, 2771, 3094, 3913, 4238, 5117, 5542, 7009, 7826, 9503, 10234, 14018, 14833, 19006, 19397, 29666, 36023, 38794, 49063, 66521, 72046, 91117, 98126, 119153, 133042, 182234, 238306, 252161, 504322, 637819, 834071, 1275638, 1548989, 1668142, 3097978, 10842923, 21685846]

約数ペア:

[(1, 21685846), (2, 10842923), (7, 3097978), (13, 1668142), (14, 1548989), (17, 1275638), (26, 834071), (34, 637819), (43, 504322), (86, 252161), (91, 238306), (119, 182234), (163, 133042), (182, 119153), (221, 98126), (238, 91117), (301, 72046), (326, 66521), (442, 49063), (559, 38794), (602, 36023), (731, 29666), (1118, 19397), (1141, 19006), (1462, 14833), (1547, 14018), (2119, 10234), (2282, 9503), (2771, 7826), (3094, 7009), (3913, 5542), (4238, 5117)]