290432440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{91909}}^1$

素因数の和:91999

約数の個数: 32

約数和(自身を含む): 661752000

約数和(自身を除く): 371319560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 91909, 183818, 367636, 459545, 735272, 919090, 1838180, 3676360, 7260811, 14521622, 29043244, 36304055, 58086488, 72608110, 145216220, 290432440]

約数ペア:

[(1, 290432440), (2, 145216220), (4, 72608110), (5, 58086488), (8, 36304055), (10, 29043244), (20, 14521622), (40, 7260811), (79, 3676360), (158, 1838180), (316, 919090), (395, 735272), (632, 459545), (790, 367636), (1580, 183818), (3160, 91909)]