19801305

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3359}}^1$

素因数の和:3501

約数の個数: 24

約数和(自身を含む): 34594560

約数和(自身を除く): 14793255

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3359, 5895, 10077, 16795, 30231, 50385, 151155, 440029, 1320087, 2200145, 3960261, 6600435, 19801305]

約数ペア:

[(1, 19801305), (3, 6600435), (5, 3960261), (9, 2200145), (15, 1320087), (45, 440029), (131, 151155), (393, 50385), (655, 30231), (1179, 16795), (1965, 10077), (3359, 5895)]