21088040967

素因数分解:

$3^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{359539}}^1$

素因数の和:359585

約数の個数: 48

約数和(自身を含む): 37392160000

約数和(自身を除く): 16304119033

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 343, 399, 441, 931, 1029, 1197, 2793, 3087, 6517, 8379, 19551, 58653, 359539, 1078617, 2516773, 3235851, 6831241, 7550319, 17617411, 20493723, 22650957, 47818687, 52852233, 61481169, 123321877, 143456061, 158556699, 334730809, 369965631, 430368183, 1004192427, 1109896893, 2343115663, 3012577281, 7029346989, 21088040967]

約数ペア:

[(1, 21088040967), (3, 7029346989), (7, 3012577281), (9, 2343115663), (19, 1109896893), (21, 1004192427), (49, 430368183), (57, 369965631), (63, 334730809), (133, 158556699), (147, 143456061), (171, 123321877), (343, 61481169), (399, 52852233), (441, 47818687), (931, 22650957), (1029, 20493723), (1197, 17617411), (2793, 7550319), (3087, 6831241), (6517, 3235851), (8379, 2516773), (19551, 1078617), (58653, 359539)]