21804315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3607}}^1$

素因数の和:3659

約数の個数: 32

約数和(自身を含む): 38793216

約数和(自身を除く): 16988901

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3607, 6045, 10821, 18035, 46891, 54105, 111817, 140673, 234455, 335451, 559085, 703365, 1453621, 1677255, 4360863, 7268105, 21804315]

約数ペア:

[(1, 21804315), (3, 7268105), (5, 4360863), (13, 1677255), (15, 1453621), (31, 703365), (39, 559085), (65, 335451), (93, 234455), (155, 140673), (195, 111817), (403, 54105), (465, 46891), (1209, 18035), (2015, 10821), (3607, 6045)]