211868181

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 360607104

約数和(自身を除く): 148738923

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 197, 301, 387, 397, 591, 903, 1191, 1379, 1773, 2709, 2779, 3573, 4137, 8337, 8471, 12411, 17071, 25011, 25413, 51213, 59297, 76239, 78209, 119497, 153639, 177891, 234627, 358491, 533673, 547463, 703881, 1075473, 1642389, 3362987, 4927167, 10088961, 23540909, 30266883, 70622727, 211868181]

約数ペア:

[(1, 211868181), (3, 70622727), (7, 30266883), (9, 23540909), (21, 10088961), (43, 4927167), (63, 3362987), (129, 1642389), (197, 1075473), (301, 703881), (387, 547463), (397, 533673), (591, 358491), (903, 234627), (1191, 177891), (1379, 153639), (1773, 119497), (2709, 78209), (2779, 76239), (3573, 59297), (4137, 51213), (8337, 25413), (8471, 25011), (12411, 17071)]