81175444

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{20857}}^1$

素因数の和:21007

約数の個数: 24

約数和(自身を含む): 163526720

約数和(自身を除く): 82351276

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 20857, 41714, 83428, 145999, 291998, 583996, 2899123, 5798246, 11596492, 20293861, 40587722, 81175444]

約数ペア:

[(1, 81175444), (2, 40587722), (4, 20293861), (7, 11596492), (14, 5798246), (28, 2899123), (139, 583996), (278, 291998), (556, 145999), (973, 83428), (1946, 41714), (3892, 20857)]