19951569

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 33707520

約数和(自身を除く): 13755951

約数列:

[1, 3, 9, 11, 27, 31, 33, 93, 99, 121, 197, 279, 297, 341, 363, 591, 837, 1023, 1089, 1773, 2167, 3069, 3267, 3751, 5319, 6107, 6501, 9207, 11253, 18321, 19503, 23837, 33759, 54963, 58509, 67177, 71511, 101277, 164889, 201531, 214533, 604593, 643599, 738947, 1813779, 2216841, 6650523, 19951569]

約数ペア:

[(1, 19951569), (3, 6650523), (9, 2216841), (11, 1813779), (27, 738947), (31, 643599), (33, 604593), (93, 214533), (99, 201531), (121, 164889), (197, 101277), (279, 71511), (297, 67177), (341, 58509), (363, 54963), (591, 33759), (837, 23837), (1023, 19503), (1089, 18321), (1773, 11253), (2167, 9207), (3069, 6501), (3267, 6107), (3751, 5319)]