21856233

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1223}}^1$

素因数の和:1293

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 13864983

約数列:

[1, 3, 7, 21, 23, 37, 69, 111, 161, 259, 483, 777, 851, 1223, 2553, 3669, 5957, 8561, 17871, 25683, 28129, 45251, 84387, 135753, 196903, 316757, 590709, 950271, 1040773, 3122319, 7285411, 21856233]

約数ペア:

[(1, 21856233), (3, 7285411), (7, 3122319), (21, 1040773), (23, 950271), (37, 590709), (69, 316757), (111, 196903), (161, 135753), (259, 84387), (483, 45251), (777, 28129), (851, 25683), (1223, 17871), (2553, 8561), (3669, 5957)]