128575280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{84589}}^1$

素因数の和:84621

約数の個数: 40

約数和(自身を含む): 314674800

約数和(自身を除く): 186099520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 84589, 169178, 338356, 422945, 676712, 845890, 1353424, 1607191, 1691780, 3214382, 3383560, 6428764, 6767120, 8035955, 12857528, 16071910, 25715056, 32143820, 64287640, 128575280]

約数ペア:

[(1, 128575280), (2, 64287640), (4, 32143820), (5, 25715056), (8, 16071910), (10, 12857528), (16, 8035955), (19, 6767120), (20, 6428764), (38, 3383560), (40, 3214382), (76, 1691780), (80, 1607191), (95, 1353424), (152, 845890), (190, 676712), (304, 422945), (380, 338356), (760, 169178), (1520, 84589)]