168320920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97861}}^1$

素因数の和:97915

約数の個数: 32

約数和(自身を含む): 387533520

約数和(自身を除く): 219212600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 97861, 195722, 391444, 489305, 782888, 978610, 1957220, 3914440, 4208023, 8416046, 16832092, 21040115, 33664184, 42080230, 84160460, 168320920]

約数ペア:

[(1, 168320920), (2, 84160460), (4, 42080230), (5, 33664184), (8, 21040115), (10, 16832092), (20, 8416046), (40, 4208023), (43, 3914440), (86, 1957220), (172, 978610), (215, 782888), (344, 489305), (430, 391444), (860, 195722), (1720, 97861)]