18221571

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 9841149

約数列:

[1, 3, 9, 27, 47, 83, 141, 173, 249, 423, 519, 747, 1269, 1557, 2241, 3901, 4671, 8131, 11703, 14359, 24393, 35109, 43077, 73179, 105327, 129231, 219537, 387693, 674873, 2024619, 6073857, 18221571]

約数ペア:

[(1, 18221571), (3, 6073857), (9, 2024619), (27, 674873), (47, 387693), (83, 219537), (141, 129231), (173, 105327), (249, 73179), (423, 43077), (519, 35109), (747, 24393), (1269, 14359), (1557, 11703), (2241, 8131), (3901, 4671)]