21788955

素因数分解:

$3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1093}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 37887408

約数和(自身を除く): 16098453

約数列:

[1, 3, 5, 9, 15, 45, 443, 1093, 1329, 2215, 3279, 3987, 5465, 6645, 9837, 16395, 19935, 49185, 484199, 1452597, 2420995, 4357791, 7262985, 21788955]

約数ペア:

[(1, 21788955), (3, 7262985), (5, 4357791), (9, 2420995), (15, 1452597), (45, 484199), (443, 49185), (1093, 19935), (1329, 16395), (2215, 9837), (3279, 6645), (3987, 5465)]