21048417

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{2221}}^1$

素因数の和:2252

約数の個数: 28

約数和(自身を含む): 34001044

約数和(自身を除く): 12952627

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 2221, 3159, 6663, 9477, 19989, 28873, 59967, 86619, 179901, 259857, 539703, 779571, 1619109, 2338713, 7016139, 21048417]

約数ペア:

[(1, 21048417), (3, 7016139), (9, 2338713), (13, 1619109), (27, 779571), (39, 539703), (81, 259857), (117, 179901), (243, 86619), (351, 59967), (729, 28873), (1053, 19989), (2221, 9477), (3159, 6663)]