21240597

素因数分解:

$3^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{2473}}^1$

素因数の和:2892

約数の個数: 16

約数和(自身を含む): 32458880

約数和(自身を除く): 11218283

約数列:

[1, 3, 7, 21, 409, 1227, 2473, 2863, 7419, 8589, 17311, 51933, 1011457, 3034371, 7080199, 21240597]

約数ペア:

[(1, 21240597), (3, 7080199), (7, 3034371), (21, 1011457), (409, 51933), (1227, 17311), (2473, 8589), (2863, 7419)]