2809989

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 5171712

約数和(自身を除く): 2361723

約数列:

[1, 3, 7, 9, 13, 21, 39, 47, 63, 73, 91, 117, 141, 219, 273, 329, 423, 511, 611, 657, 819, 949, 987, 1533, 1833, 2847, 2961, 3431, 4277, 4599, 5499, 6643, 8541, 10293, 12831, 19929, 24017, 30879, 38493, 44603, 59787, 72051, 133809, 216153, 312221, 401427, 936663, 2809989]

約数ペア:

[(1, 2809989), (3, 936663), (7, 401427), (9, 312221), (13, 216153), (21, 133809), (39, 72051), (47, 59787), (63, 44603), (73, 38493), (91, 30879), (117, 24017), (141, 19929), (219, 12831), (273, 10293), (329, 8541), (423, 6643), (511, 5499), (611, 4599), (657, 4277), (819, 3431), (949, 2961), (987, 2847), (1533, 1833)]