19629880

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2143}}^1$

素因数の和:2383

約数の個数: 32

約数和(自身を含む): 44380800

約数和(自身を除く): 24750920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2143, 2290, 4286, 4580, 8572, 9160, 10715, 17144, 21430, 42860, 85720, 490747, 981494, 1962988, 2453735, 3925976, 4907470, 9814940, 19629880]

約数ペア:

[(1, 19629880), (2, 9814940), (4, 4907470), (5, 3925976), (8, 2453735), (10, 1962988), (20, 981494), (40, 490747), (229, 85720), (458, 42860), (916, 21430), (1145, 17144), (1832, 10715), (2143, 9160), (2290, 8572), (4286, 4580)]