21424419

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13921}}^1$

素因数の和:13952

約数の個数: 20

約数和(自身を含む): 33691240

約数和(自身を除く): 12266821

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13921, 41763, 125289, 264499, 375867, 793497, 1127601, 2380491, 7141473, 21424419]

約数ペア:

[(1, 21424419), (3, 7141473), (9, 2380491), (19, 1127601), (27, 793497), (57, 375867), (81, 264499), (171, 125289), (513, 41763), (1539, 13921)]