21256530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8969}}^1$

素因数の和:9058

約数の個数: 32

約数和(自身を含む): 51667200

約数和(自身を除く): 30410670

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 158, 237, 395, 474, 790, 1185, 2370, 8969, 17938, 26907, 44845, 53814, 89690, 134535, 269070, 708551, 1417102, 2125653, 3542755, 4251306, 7085510, 10628265, 21256530]

約数ペア:

[(1, 21256530), (2, 10628265), (3, 7085510), (5, 4251306), (6, 3542755), (10, 2125653), (15, 1417102), (30, 708551), (79, 269070), (158, 134535), (237, 89690), (395, 53814), (474, 44845), (790, 26907), (1185, 17938), (2370, 8969)]