21338559

素因数分解:

$3^7\times {\mathrm{11}}^1\times {\mathrm{887}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 34951680

約数和(自身を除く): 13613121

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 729, 887, 891, 2187, 2661, 2673, 7983, 8019, 9757, 23949, 24057, 29271, 71847, 87813, 215541, 263439, 646623, 790317, 1939869, 2370951, 7112853, 21338559]

約数ペア:

[(1, 21338559), (3, 7112853), (9, 2370951), (11, 1939869), (27, 790317), (33, 646623), (81, 263439), (99, 215541), (243, 87813), (297, 71847), (729, 29271), (887, 24057), (891, 23949), (2187, 9757), (2661, 8019), (2673, 7983)]