21401877

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 35163072

約数和(自身を除く): 13761195

約数列:

[1, 3, 7, 21, 41, 49, 53, 67, 123, 147, 159, 201, 287, 371, 469, 861, 1113, 1407, 2009, 2173, 2597, 2747, 3283, 3551, 6027, 6519, 7791, 8241, 9849, 10653, 15211, 19229, 24857, 45633, 57687, 74571, 106477, 134603, 145591, 173999, 319431, 403809, 436773, 521997, 1019137, 3057411, 7133959, 21401877]

約数ペア:

[(1, 21401877), (3, 7133959), (7, 3057411), (21, 1019137), (41, 521997), (49, 436773), (53, 403809), (67, 319431), (123, 173999), (147, 145591), (159, 134603), (201, 106477), (287, 74571), (371, 57687), (469, 45633), (861, 24857), (1113, 19229), (1407, 15211), (2009, 10653), (2173, 9849), (2597, 8241), (2747, 7791), (3283, 6519), (3551, 6027)]