81321695

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{487}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 120680448

約数和(自身を除く): 39358753

約数列:

[1, 5, 7, 13, 35, 65, 91, 367, 455, 487, 1835, 2435, 2569, 3409, 4771, 6331, 12845, 17045, 23855, 31655, 33397, 44317, 166985, 178729, 221585, 893645, 1251103, 2323477, 6255515, 11617385, 16264339, 81321695]

約数ペア:

[(1, 81321695), (5, 16264339), (7, 11617385), (13, 6255515), (35, 2323477), (65, 1251103), (91, 893645), (367, 221585), (455, 178729), (487, 166985), (1835, 44317), (2435, 33397), (2569, 31655), (3409, 23855), (4771, 17045), (6331, 12845)]