81487978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4013}}^1$

素因数の和:4110

約数の個数: 32

約数和(自身を含む): 145660032

約数和(自身を除く): 64172054

約数列:

[1, 2, 11, 13, 22, 26, 71, 142, 143, 286, 781, 923, 1562, 1846, 4013, 8026, 10153, 20306, 44143, 52169, 88286, 104338, 284923, 569846, 573859, 1147718, 3134153, 3703999, 6268306, 7407998, 40743989, 81487978]

約数ペア:

[(1, 81487978), (2, 40743989), (11, 7407998), (13, 6268306), (22, 3703999), (26, 3134153), (71, 1147718), (142, 573859), (143, 569846), (286, 284923), (781, 104338), (923, 88286), (1562, 52169), (1846, 44143), (4013, 20306), (8026, 10153)]