20981850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{3253}}^1$

素因数の和:3311

約数の個数: 48

約数和(自身を含む): 53261472

約数和(自身を除く): 32279622

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 129, 150, 215, 258, 430, 645, 1075, 1290, 2150, 3225, 3253, 6450, 6506, 9759, 16265, 19518, 32530, 48795, 81325, 97590, 139879, 162650, 243975, 279758, 419637, 487950, 699395, 839274, 1398790, 2098185, 3496975, 4196370, 6993950, 10490925, 20981850]

約数ペア:

[(1, 20981850), (2, 10490925), (3, 6993950), (5, 4196370), (6, 3496975), (10, 2098185), (15, 1398790), (25, 839274), (30, 699395), (43, 487950), (50, 419637), (75, 279758), (86, 243975), (129, 162650), (150, 139879), (215, 97590), (258, 81325), (430, 48795), (645, 32530), (1075, 19518), (1290, 16265), (2150, 9759), (3225, 6506), (3253, 6450)]