1861947

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:320

約数の個数: 20

約数和(自身を含む): 2818816

約数和(自身を除く): 956869

約数列:

[1, 3, 9, 27, 81, 127, 181, 381, 543, 1143, 1629, 3429, 4887, 10287, 14661, 22987, 68961, 206883, 620649, 1861947]

約数ペア:

[(1, 1861947), (3, 620649), (9, 206883), (27, 68961), (81, 22987), (127, 14661), (181, 10287), (381, 4887), (543, 3429), (1143, 1629)]