247938320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{442747}}^1$

素因数の和:442767

約数の個数: 40

約数和(自身を含む): 658809024

約数和(自身を除く): 410870704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 442747, 885494, 1770988, 2213735, 3099229, 3541976, 4427470, 6198458, 7083952, 8854940, 12396916, 15496145, 17709880, 24793832, 30992290, 35419760, 49587664, 61984580, 123969160, 247938320]

約数ペア:

[(1, 247938320), (2, 123969160), (4, 61984580), (5, 49587664), (7, 35419760), (8, 30992290), (10, 24793832), (14, 17709880), (16, 15496145), (20, 12396916), (28, 8854940), (35, 7083952), (40, 6198458), (56, 4427470), (70, 3541976), (80, 3099229), (112, 2213735), (140, 1770988), (280, 885494), (560, 442747)]