21272727

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 34320384

約数和(自身を除く): 13047657

約数列:

[1, 3, 7, 21, 31, 41, 93, 123, 217, 287, 651, 797, 861, 1271, 2391, 3813, 5579, 8897, 16737, 24707, 26691, 32677, 74121, 98031, 172949, 228739, 518847, 686217, 1012987, 3038961, 7090909, 21272727]

約数ペア:

[(1, 21272727), (3, 7090909), (7, 3038961), (21, 1012987), (31, 686217), (41, 518847), (93, 228739), (123, 172949), (217, 98031), (287, 74121), (651, 32677), (797, 26691), (861, 24707), (1271, 16737), (2391, 8897), (3813, 5579)]