81556510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{31489}}^1$

素因数の和:31540

約数の個数: 32

約数和(自身を含む): 172313280

約数和(自身を除く): 90756770

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 185, 259, 370, 518, 1295, 2590, 31489, 62978, 157445, 220423, 314890, 440846, 1102115, 1165093, 2204230, 2330186, 5825465, 8155651, 11650930, 16311302, 40778255, 81556510]

約数ペア:

[(1, 81556510), (2, 40778255), (5, 16311302), (7, 11650930), (10, 8155651), (14, 5825465), (35, 2330186), (37, 2204230), (70, 1165093), (74, 1102115), (185, 440846), (259, 314890), (370, 220423), (518, 157445), (1295, 62978), (2590, 31489)]