89912920

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{3253}}^1$

素因数の和:3955

約数の個数: 32

約数和(自身を含む): 202659120

約数和(自身を除く): 112746200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3253, 3455, 5528, 6506, 6910, 13012, 13820, 16265, 26024, 27640, 32530, 65060, 130120, 2247823, 4495646, 8991292, 11239115, 17982584, 22478230, 44956460, 89912920]

約数ペア:

[(1, 89912920), (2, 44956460), (4, 22478230), (5, 17982584), (8, 11239115), (10, 8991292), (20, 4495646), (40, 2247823), (691, 130120), (1382, 65060), (2764, 32530), (3253, 27640), (3455, 26024), (5528, 16265), (6506, 13820), (6910, 13012)]