19478745

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1009}}^1$

素因数の和:1047

約数の個数: 64

約数和(自身を含む): 40723200

約数和(自身を除く): 21244455

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 1009, 1287, 1485, 1755, 2145, 3027, 3861, 5045, 6435, 9081, 11099, 13117, 15135, 19305, 27243, 33297, 39351, 45405, 55495, 65585, 99891, 118053, 136215, 144287, 166485, 196755, 299673, 354159, 432861, 499455, 590265, 721435, 1298583, 1498365, 1770795, 2164305, 3895749, 6492915, 19478745]

約数ペア:

[(1, 19478745), (3, 6492915), (5, 3895749), (9, 2164305), (11, 1770795), (13, 1498365), (15, 1298583), (27, 721435), (33, 590265), (39, 499455), (45, 432861), (55, 354159), (65, 299673), (99, 196755), (117, 166485), (135, 144287), (143, 136215), (165, 118053), (195, 99891), (297, 65585), (351, 55495), (429, 45405), (495, 39351), (585, 33297), (715, 27243), (1009, 19305), (1287, 15135), (1485, 13117), (1755, 11099), (2145, 9081), (3027, 6435), (3861, 5045)]