438431380

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1\times {\mathrm{499}}^1$

素因数の和:928

約数の個数: 48

約数和(自身を含む): 931392000

約数和(自身を除く): 492960620

約数列:

[1, 2, 4, 5, 10, 20, 197, 223, 394, 446, 499, 788, 892, 985, 998, 1115, 1970, 1996, 2230, 2495, 3940, 4460, 4990, 9980, 43931, 87862, 98303, 111277, 175724, 196606, 219655, 222554, 393212, 439310, 445108, 491515, 556385, 878620, 983030, 1112770, 1966060, 2225540, 21921569, 43843138, 87686276, 109607845, 219215690, 438431380]

約数ペア:

[(1, 438431380), (2, 219215690), (4, 109607845), (5, 87686276), (10, 43843138), (20, 21921569), (197, 2225540), (223, 1966060), (394, 1112770), (446, 983030), (499, 878620), (788, 556385), (892, 491515), (985, 445108), (998, 439310), (1115, 393212), (1970, 222554), (1996, 219655), (2230, 196606), (2495, 175724), (3940, 111277), (4460, 98303), (4990, 87862), (9980, 43931)]