21828219

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1051}}^1$

素因数の和:1127

約数の個数: 32

約数和(自身を含む): 35549184

約数和(自身を除く): 13720965

約数列:

[1, 3, 7, 21, 23, 43, 69, 129, 161, 301, 483, 903, 989, 1051, 2967, 3153, 6923, 7357, 20769, 22071, 24173, 45193, 72519, 135579, 169211, 316351, 507633, 949053, 1039439, 3118317, 7276073, 21828219]

約数ペア:

[(1, 21828219), (3, 7276073), (7, 3118317), (21, 1039439), (23, 949053), (43, 507633), (69, 316351), (129, 169211), (161, 135579), (301, 72519), (483, 45193), (903, 24173), (989, 22071), (1051, 20769), (2967, 7357), (3153, 6923)]