1997721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1187}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 3335904

約数和(自身を除く): 1338183

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 153, 187, 561, 1187, 1683, 3561, 10683, 13057, 20179, 39171, 60537, 117513, 181611, 221969, 665907, 1997721]

約数ペア:

[(1, 1997721), (3, 665907), (9, 221969), (11, 181611), (17, 117513), (33, 60537), (51, 39171), (99, 20179), (153, 13057), (187, 10683), (561, 3561), (1187, 1683)]