21813189

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1627}}^1$

素因数の和:1780

約数の個数: 16

約数和(自身を含む): 30085440

約数和(自身を除く): 8272251

約数列:

[1, 3, 41, 109, 123, 327, 1627, 4469, 4881, 13407, 66707, 177343, 200121, 532029, 7271063, 21813189]

約数ペア:

[(1, 21813189), (3, 7271063), (41, 532029), (109, 200121), (123, 177343), (327, 66707), (1627, 13407), (4469, 4881)]