81625040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145759}}^1$

素因数の和:145779

約数の個数: 40

約数和(自身を含む): 216890880

約数和(自身を除く): 135265840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145759, 291518, 583036, 728795, 1020313, 1166072, 1457590, 2040626, 2332144, 2915180, 4081252, 5101565, 5830360, 8162504, 10203130, 11660720, 16325008, 20406260, 40812520, 81625040]

約数ペア:

[(1, 81625040), (2, 40812520), (4, 20406260), (5, 16325008), (7, 11660720), (8, 10203130), (10, 8162504), (14, 5830360), (16, 5101565), (20, 4081252), (28, 2915180), (35, 2332144), (40, 2040626), (56, 1457590), (70, 1166072), (80, 1020313), (112, 728795), (140, 583036), (280, 291518), (560, 145759)]