21911769

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 37665600

約数和(自身を除く): 15753831

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 121, 171, 209, 297, 353, 363, 513, 627, 1059, 1089, 1881, 2299, 3177, 3267, 3883, 5643, 6707, 6897, 9531, 11649, 20121, 20691, 34947, 42713, 60363, 62073, 73777, 104841, 128139, 181089, 221331, 384417, 663993, 811547, 1153251, 1991979, 2434641, 7303923, 21911769]

約数ペア:

[(1, 21911769), (3, 7303923), (9, 2434641), (11, 1991979), (19, 1153251), (27, 811547), (33, 663993), (57, 384417), (99, 221331), (121, 181089), (171, 128139), (209, 104841), (297, 73777), (353, 62073), (363, 60363), (513, 42713), (627, 34947), (1059, 20691), (1089, 20121), (1881, 11649), (2299, 9531), (3177, 6897), (3267, 6707), (3883, 5643)]