81686121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 123120000

約数和(自身を除く): 41433879

約数列:

[1, 3, 11, 33, 37, 111, 149, 407, 447, 449, 1221, 1347, 1639, 4917, 4939, 5513, 14817, 16539, 16613, 49839, 60643, 66901, 181929, 182743, 200703, 548229, 735911, 2207733, 2475337, 7426011, 27228707, 81686121]

約数ペア:

[(1, 81686121), (3, 27228707), (11, 7426011), (33, 2475337), (37, 2207733), (111, 735911), (149, 548229), (407, 200703), (447, 182743), (449, 181929), (1221, 66901), (1347, 60643), (1639, 49839), (4917, 16613), (4939, 16539), (5513, 14817)]