19783827

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 34228480

約数和(自身を除く): 14444653

約数列:

[1, 3, 7, 9, 21, 43, 63, 67, 109, 129, 201, 301, 327, 387, 469, 603, 763, 903, 981, 1407, 2289, 2709, 2881, 4221, 4687, 6867, 7303, 8643, 14061, 20167, 21909, 25929, 32809, 42183, 51121, 60501, 65727, 98427, 153363, 181503, 295281, 314029, 460089, 942087, 2198203, 2826261, 6594609, 19783827]

約数ペア:

[(1, 19783827), (3, 6594609), (7, 2826261), (9, 2198203), (21, 942087), (43, 460089), (63, 314029), (67, 295281), (109, 181503), (129, 153363), (201, 98427), (301, 65727), (327, 60501), (387, 51121), (469, 42183), (603, 32809), (763, 25929), (903, 21909), (981, 20167), (1407, 14061), (2289, 8643), (2709, 7303), (2881, 6867), (4221, 4687)]