21296630

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18378250

約数列:

[1, 2, 5, 10, 41, 82, 127, 205, 254, 409, 410, 635, 818, 1270, 2045, 4090, 5207, 10414, 16769, 26035, 33538, 51943, 52070, 83845, 103886, 167690, 259715, 519430, 2129663, 4259326, 10648315, 21296630]

約数ペア:

[(1, 21296630), (2, 10648315), (5, 4259326), (10, 2129663), (41, 519430), (82, 259715), (127, 167690), (205, 103886), (254, 83845), (409, 52070), (410, 51943), (635, 33538), (818, 26035), (1270, 16769), (2045, 10414), (4090, 5207)]