129485480

素因数分解:

$2^3\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{1997}}^1$

素因数の和:3629

約数の個数: 32

約数和(自身を含む): 291668040

約数和(自身を除く): 162182560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1621, 1997, 3242, 3994, 6484, 7988, 8105, 9985, 12968, 15976, 16210, 19970, 32420, 39940, 64840, 79880, 3237137, 6474274, 12948548, 16185685, 25897096, 32371370, 64742740, 129485480]

約数ペア:

[(1, 129485480), (2, 64742740), (4, 32371370), (5, 25897096), (8, 16185685), (10, 12948548), (20, 6474274), (40, 3237137), (1621, 79880), (1997, 64840), (3242, 39940), (3994, 32420), (6484, 19970), (7988, 16210), (8105, 15976), (9985, 12968)]