21559461

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 37209600

約数和(自身を除く): 15650139

約数列:

[1, 3, 7, 11, 21, 33, 49, 67, 77, 147, 199, 201, 231, 469, 539, 597, 737, 1393, 1407, 1617, 2189, 2211, 3283, 4179, 5159, 6567, 9751, 9849, 13333, 15323, 15477, 29253, 36113, 39999, 45969, 93331, 107261, 108339, 146663, 279993, 321783, 439989, 653317, 1026641, 1959951, 3079923, 7186487, 21559461]

約数ペア:

[(1, 21559461), (3, 7186487), (7, 3079923), (11, 1959951), (21, 1026641), (33, 653317), (49, 439989), (67, 321783), (77, 279993), (147, 146663), (199, 108339), (201, 107261), (231, 93331), (469, 45969), (539, 39999), (597, 36113), (737, 29253), (1393, 15477), (1407, 15323), (1617, 13333), (2189, 9849), (2211, 9751), (3283, 6567), (4179, 5159)]