31218970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:882

約数の個数: 32

約数和(自身を含む): 59778000

約数和(自身を除く): 28559030

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 409, 449, 818, 898, 2045, 2245, 4090, 4490, 6953, 7633, 13906, 15266, 34765, 38165, 69530, 76330, 183641, 367282, 918205, 1836410, 3121897, 6243794, 15609485, 31218970]

約数ペア:

[(1, 31218970), (2, 15609485), (5, 6243794), (10, 3121897), (17, 1836410), (34, 918205), (85, 367282), (170, 183641), (409, 76330), (449, 69530), (818, 38165), (898, 34765), (2045, 15266), (2245, 13906), (4090, 7633), (4490, 6953)]