81289485

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20297}}^1$

素因数の和:20397

約数の個数: 24

約数和(自身を含む): 142491960

約数和(自身を除く): 61202475

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 20297, 60891, 101485, 182673, 304455, 913365, 1806433, 5419299, 9032165, 16257897, 27096495, 81289485]

約数ペア:

[(1, 81289485), (3, 27096495), (5, 16257897), (9, 9032165), (15, 5419299), (45, 1806433), (89, 913365), (267, 304455), (445, 182673), (801, 101485), (1335, 60891), (4005, 20297)]