78408680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280031}}^1$

素因数の和:280049

約数の個数: 32

約数和(自身を含む): 201623040

約数和(自身を除く): 123214360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280031, 560062, 1120124, 1400155, 1960217, 2240248, 2800310, 3920434, 5600620, 7840868, 9801085, 11201240, 15681736, 19602170, 39204340, 78408680]

約数ペア:

[(1, 78408680), (2, 39204340), (4, 19602170), (5, 15681736), (7, 11201240), (8, 9801085), (10, 7840868), (14, 5600620), (20, 3920434), (28, 2800310), (35, 2240248), (40, 1960217), (56, 1400155), (70, 1120124), (140, 560062), (280, 280031)]