19726959

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1009}}^1$

素因数の和:1052

約数の個数: 32

約数和(自身を含む): 32320000

約数和(自身を除く): 12593041

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1009, 1029, 2793, 3027, 6517, 7063, 19171, 19551, 21189, 49441, 57513, 134197, 148323, 346087, 402591, 939379, 1038261, 2818137, 6575653, 19726959]

約数ペア:

[(1, 19726959), (3, 6575653), (7, 2818137), (19, 1038261), (21, 939379), (49, 402591), (57, 346087), (133, 148323), (147, 134197), (343, 57513), (399, 49441), (931, 21189), (1009, 19551), (1029, 19171), (2793, 7063), (3027, 6517)]