21006787207

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{593}}^1\times {\mathrm{23321}}^1$

素因数の和:23959

約数の個数: 24

約数和(自身を含む): 25268360832

約数和(自身を除く): 4261573625

約数列:

[1, 7, 31, 49, 217, 593, 1519, 4151, 18383, 23321, 29057, 128681, 163247, 722951, 900767, 1142729, 5060657, 13829353, 35424599, 96805471, 428709943, 677638297, 3000969601, 21006787207]

約数ペア:

[(1, 21006787207), (7, 3000969601), (31, 677638297), (49, 428709943), (217, 96805471), (593, 35424599), (1519, 13829353), (4151, 5060657), (18383, 1142729), (23321, 900767), (29057, 722951), (128681, 163247)]