21543249

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 38191104

約数和(自身を除く): 16647855

約数列:

[1, 3, 7, 13, 21, 23, 39, 47, 69, 73, 91, 141, 161, 219, 273, 299, 329, 483, 511, 611, 897, 949, 987, 1081, 1533, 1679, 1833, 2093, 2847, 3243, 3431, 4277, 5037, 6279, 6643, 7567, 10293, 11753, 12831, 14053, 19929, 21827, 22701, 24017, 35259, 42159, 44603, 65481, 72051, 78913, 98371, 133809, 152789, 236739, 295113, 312221, 458367, 552391, 936663, 1025869, 1657173, 3077607, 7181083, 21543249]

約数ペア:

[(1, 21543249), (3, 7181083), (7, 3077607), (13, 1657173), (21, 1025869), (23, 936663), (39, 552391), (47, 458367), (69, 312221), (73, 295113), (91, 236739), (141, 152789), (161, 133809), (219, 98371), (273, 78913), (299, 72051), (329, 65481), (483, 44603), (511, 42159), (611, 35259), (897, 24017), (949, 22701), (987, 21827), (1081, 19929), (1533, 14053), (1679, 12831), (1833, 11753), (2093, 10293), (2847, 7567), (3243, 6643), (3431, 6279), (4277, 5037)]