21170205

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9601}}^1$

素因数の和:9626

約数の個数: 36

約数和(自身を含む): 42690492

約数和(自身を除く): 21520287

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9601, 28803, 48005, 67207, 86409, 144015, 201621, 336035, 432045, 470449, 604863, 1008105, 1411347, 2352245, 3024315, 4234041, 7056735, 21170205]

約数ペア:

[(1, 21170205), (3, 7056735), (5, 4234041), (7, 3024315), (9, 2352245), (15, 1411347), (21, 1008105), (35, 604863), (45, 470449), (49, 432045), (63, 336035), (105, 201621), (147, 144015), (245, 86409), (315, 67207), (441, 48005), (735, 28803), (2205, 9601)]