1820511

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:132

約数の個数: 48

約数和(自身を含む): 3414528

約数和(自身を除く): 1594017

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 71, 77, 99, 111, 213, 231, 259, 333, 407, 497, 639, 693, 777, 781, 1221, 1491, 2331, 2343, 2627, 2849, 3663, 4473, 5467, 7029, 7881, 8547, 16401, 18389, 23643, 25641, 28897, 49203, 55167, 86691, 165501, 202279, 260073, 606837, 1820511]

約数ペア:

[(1, 1820511), (3, 606837), (7, 260073), (9, 202279), (11, 165501), (21, 86691), (33, 55167), (37, 49203), (63, 28897), (71, 25641), (77, 23643), (99, 18389), (111, 16401), (213, 8547), (231, 7881), (259, 7029), (333, 5467), (407, 4473), (497, 3663), (639, 2849), (693, 2627), (777, 2343), (781, 2331), (1221, 1491)]