21268233

素因数分解:

$3^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{769}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 35235200

約数和(自身を除く): 13966967

約数列:

[1, 3, 7, 9, 21, 63, 439, 769, 1317, 2307, 3073, 3951, 5383, 6921, 9219, 16149, 27657, 48447, 337591, 1012773, 2363137, 3038319, 7089411, 21268233]

約数ペア:

[(1, 21268233), (3, 7089411), (7, 3038319), (9, 2363137), (21, 1012773), (63, 337591), (439, 48447), (769, 27657), (1317, 16149), (2307, 9219), (3073, 6921), (3951, 5383)]