20685339

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{491}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 31110144

約数和(自身を除く): 10424805

約数列:

[1, 3, 9, 31, 93, 151, 279, 453, 491, 1359, 1473, 4419, 4681, 14043, 15221, 42129, 45663, 74141, 136989, 222423, 667269, 2298371, 6895113, 20685339]

約数ペア:

[(1, 20685339), (3, 6895113), (9, 2298371), (31, 667269), (93, 222423), (151, 136989), (279, 74141), (453, 45663), (491, 42129), (1359, 15221), (1473, 14043), (4419, 4681)]