21306873

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16633}}^1$

素因数の和:16704

約数の個数: 16

約数和(自身を含む): 33001856

約数和(自身を除く): 11694983

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16633, 49899, 116431, 349293, 1014613, 3043839, 7102291, 21306873]

約数ペア:

[(1, 21306873), (3, 7102291), (7, 3043839), (21, 1014613), (61, 349293), (183, 116431), (427, 49899), (1281, 16633)]