21801741

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1\times {\mathrm{809}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 31389120

約数和(自身を除く): 9587379

約数列:

[1, 3, 13, 39, 691, 809, 2073, 2427, 8983, 10517, 26949, 31551, 559019, 1677057, 7267247, 21801741]

約数ペア:

[(1, 21801741), (3, 7267247), (13, 1677057), (39, 559019), (691, 31551), (809, 26949), (2073, 10517), (2427, 8983)]