19887387

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{22171}}^1$

素因数の和:22210

約数の個数: 16

約数和(自身を含む): 29799168

約数和(自身を除く): 9911781

約数列:

[1, 3, 13, 23, 39, 69, 299, 897, 22171, 66513, 288223, 509933, 864669, 1529799, 6629129, 19887387]

約数ペア:

[(1, 19887387), (3, 6629129), (13, 1529799), (23, 864669), (39, 509933), (69, 288223), (299, 66513), (897, 22171)]