31521440

素因数分解:

$2^5\times 5^1\times {\mathrm{197009}}^1$

素因数の和:197024

約数の個数: 24

約数和(自身を含む): 74469780

約数和(自身を除く): 42948340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197009, 394018, 788036, 985045, 1576072, 1970090, 3152144, 3940180, 6304288, 7880360, 15760720, 31521440]

約数ペア:

[(1, 31521440), (2, 15760720), (4, 7880360), (5, 6304288), (8, 3940180), (10, 3152144), (16, 1970090), (20, 1576072), (32, 985045), (40, 788036), (80, 394018), (160, 197009)]