20195091

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2447}}^1$

素因数の和:2591

約数の個数: 24

約数和(自身を含む): 33606144

約数和(自身を除く): 13411053

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2447, 2751, 7341, 8253, 17129, 22023, 51387, 154161, 320557, 961671, 2243899, 2885013, 6731697, 20195091]

約数ペア:

[(1, 20195091), (3, 6731697), (7, 2885013), (9, 2243899), (21, 961671), (63, 320557), (131, 154161), (393, 51387), (917, 22023), (1179, 17129), (2447, 8253), (2751, 7341)]