201720015

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{1867}}^1$

素因数の和:1906

約数の個数: 60

約数和(自身を含む): 408116904

約数和(自身を除く): 206396889

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1715, 1867, 2205, 2401, 3087, 5145, 5601, 7203, 9335, 12005, 13069, 15435, 16803, 21609, 28005, 36015, 39207, 65345, 84015, 91483, 108045, 117621, 196035, 274449, 457415, 588105, 640381, 823347, 1372245, 1921143, 3201905, 4116735, 4482667, 5763429, 9605715, 13448001, 22413335, 28817145, 40344003, 67240005, 201720015]

約数ペア:

[(1, 201720015), (3, 67240005), (5, 40344003), (7, 28817145), (9, 22413335), (15, 13448001), (21, 9605715), (35, 5763429), (45, 4482667), (49, 4116735), (63, 3201905), (105, 1921143), (147, 1372245), (245, 823347), (315, 640381), (343, 588105), (441, 457415), (735, 274449), (1029, 196035), (1715, 117621), (1867, 108045), (2205, 91483), (2401, 84015), (3087, 65345), (5145, 39207), (5601, 36015), (7203, 28005), (9335, 21609), (12005, 16803), (13069, 15435)]