81515749

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 101896704

約数和(自身を除く): 20380955

約数列:

[1, 7, 23, 41, 53, 161, 233, 287, 371, 943, 1219, 1631, 2173, 5359, 6601, 8533, 9553, 12349, 15211, 37513, 49979, 66871, 86443, 219719, 284027, 349853, 506309, 1538033, 1988189, 3544163, 11645107, 81515749]

約数ペア:

[(1, 81515749), (7, 11645107), (23, 3544163), (41, 1988189), (53, 1538033), (161, 506309), (233, 349853), (287, 284027), (371, 219719), (943, 86443), (1219, 66871), (1631, 49979), (2173, 37513), (5359, 15211), (6601, 12349), (8533, 9553)]