223878680

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{28411}}^1$

素因数の和:28619

約数の個数: 32

約数和(自身を含む): 506301840

約数和(自身を除く): 282423160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 28411, 56822, 113644, 142055, 227288, 284110, 568220, 1136440, 5596967, 11193934, 22387868, 27984835, 44775736, 55969670, 111939340, 223878680]

約数ペア:

[(1, 223878680), (2, 111939340), (4, 55969670), (5, 44775736), (8, 27984835), (10, 22387868), (20, 11193934), (40, 5596967), (197, 1136440), (394, 568220), (788, 284110), (985, 227288), (1576, 142055), (1970, 113644), (3940, 56822), (7880, 28411)]