19945989

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1459}}^1$

素因数の和:1510

約数の個数: 36

約数和(自身を含む): 34619520

約数和(自身を除く): 14673531

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1459, 1519, 1953, 4377, 4557, 10213, 13131, 13671, 30639, 45229, 71491, 91917, 135687, 214473, 316603, 407061, 643419, 949809, 2216221, 2849427, 6648663, 19945989]

約数ペア:

[(1, 19945989), (3, 6648663), (7, 2849427), (9, 2216221), (21, 949809), (31, 643419), (49, 407061), (63, 316603), (93, 214473), (147, 135687), (217, 91917), (279, 71491), (441, 45229), (651, 30639), (1459, 13671), (1519, 13131), (1953, 10213), (4377, 4557)]