8640440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11369}}^1$

素因数の和:11399

約数の個数: 32

約数和(自身を含む): 20466000

約数和(自身を除く): 11825560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 11369, 22738, 45476, 56845, 90952, 113690, 216011, 227380, 432022, 454760, 864044, 1080055, 1728088, 2160110, 4320220, 8640440]

約数ペア:

[(1, 8640440), (2, 4320220), (4, 2160110), (5, 1728088), (8, 1080055), (10, 864044), (19, 454760), (20, 432022), (38, 227380), (40, 216011), (76, 113690), (95, 90952), (152, 56845), (190, 45476), (380, 22738), (760, 11369)]