221341491

素因数分解:

$3^4\times 7^1\times {\mathrm{390373}}^1$

素因数の和:390392

約数の個数: 20

約数和(自身を含む): 377882032

約数和(自身を除く): 156540541

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 390373, 1171119, 2732611, 3513357, 8197833, 10540071, 24593499, 31620213, 73780497, 221341491]

約数ペア:

[(1, 221341491), (3, 73780497), (7, 31620213), (9, 24593499), (21, 10540071), (27, 8197833), (63, 3513357), (81, 2732611), (189, 1171119), (567, 390373)]