20184620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 23723860

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 109, 188, 197, 218, 235, 394, 436, 470, 545, 788, 940, 985, 1090, 1970, 2180, 3940, 5123, 9259, 10246, 18518, 20492, 21473, 25615, 37036, 42946, 46295, 51230, 85892, 92590, 102460, 107365, 185180, 214730, 429460, 1009231, 2018462, 4036924, 5046155, 10092310, 20184620]

約数ペア:

[(1, 20184620), (2, 10092310), (4, 5046155), (5, 4036924), (10, 2018462), (20, 1009231), (47, 429460), (94, 214730), (109, 185180), (188, 107365), (197, 102460), (218, 92590), (235, 85892), (394, 51230), (436, 46295), (470, 42946), (545, 37036), (788, 25615), (940, 21473), (985, 20492), (1090, 18518), (1970, 10246), (2180, 9259), (3940, 5123)]