20480445

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{829}}^1$

素因数の和:907

約数の個数: 40

約数和(自身を含む): 37359960

約数和(自身を除く): 16879515

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 829, 915, 1647, 2487, 2745, 4145, 4941, 7461, 8235, 12435, 22383, 24705, 37305, 50569, 67149, 111915, 151707, 252845, 335745, 455121, 758535, 1365363, 2275605, 4096089, 6826815, 20480445]

約数ペア:

[(1, 20480445), (3, 6826815), (5, 4096089), (9, 2275605), (15, 1365363), (27, 758535), (45, 455121), (61, 335745), (81, 252845), (135, 151707), (183, 111915), (305, 67149), (405, 50569), (549, 37305), (829, 24705), (915, 22383), (1647, 12435), (2487, 8235), (2745, 7461), (4145, 4941)]