123239870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{72923}}^1$

素因数の和:72956

約数の個数: 24

約数和(自身を含む): 240211656

約数和(自身を除く): 116971786

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 72923, 145846, 364615, 729230, 947999, 1895998, 4739995, 9479990, 12323987, 24647974, 61619935, 123239870]

約数ペア:

[(1, 123239870), (2, 61619935), (5, 24647974), (10, 12323987), (13, 9479990), (26, 4739995), (65, 1895998), (130, 947999), (169, 729230), (338, 364615), (845, 145846), (1690, 72923)]