21267309

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13873}}^1$

素因数の和:13956

約数の個数: 16

約数和(自身を含む): 32853632

約数和(自身を除く): 11586323

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13873, 41619, 97111, 291333, 1012729, 3038187, 7089103, 21267309]

約数ペア:

[(1, 21267309), (3, 7089103), (7, 3038187), (21, 1012729), (73, 291333), (219, 97111), (511, 41619), (1533, 13873)]