20205945

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 37778832

約数和(自身を除く): 17572887

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 61, 85, 153, 183, 255, 305, 433, 549, 765, 915, 1037, 1299, 2165, 2745, 3111, 3897, 5185, 6495, 7361, 9333, 15555, 19485, 22083, 26413, 36805, 46665, 66249, 79239, 110415, 132065, 237717, 331245, 396195, 449021, 1188585, 1347063, 2245105, 4041189, 6735315, 20205945]

約数ペア:

[(1, 20205945), (3, 6735315), (5, 4041189), (9, 2245105), (15, 1347063), (17, 1188585), (45, 449021), (51, 396195), (61, 331245), (85, 237717), (153, 132065), (183, 110415), (255, 79239), (305, 66249), (433, 46665), (549, 36805), (765, 26413), (915, 22083), (1037, 19485), (1299, 15555), (2165, 9333), (2745, 7361), (3111, 6495), (3897, 5185)]