128438919

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4889}}^1$

素因数の和:5044

約数の個数: 32

約数和(自身を含む): 219072000

約数和(自身を除く): 90633081

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 973, 1251, 2919, 3753, 4889, 8757, 14667, 26271, 34223, 44001, 102669, 132003, 308007, 679571, 924021, 2038713, 4756997, 6116139, 14270991, 18348417, 42812973, 128438919]

約数ペア:

[(1, 128438919), (3, 42812973), (7, 18348417), (9, 14270991), (21, 6116139), (27, 4756997), (63, 2038713), (139, 924021), (189, 679571), (417, 308007), (973, 132003), (1251, 102669), (2919, 44001), (3753, 34223), (4889, 26271), (8757, 14667)]