19940680

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6829}}^1$

素因数の和:6913

約数の個数: 32

約数和(自身を含む): 45487800

約数和(自身を除く): 25547120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6829, 13658, 27316, 34145, 54632, 68290, 136580, 273160, 498517, 997034, 1994068, 2492585, 3988136, 4985170, 9970340, 19940680]

約数ペア:

[(1, 19940680), (2, 9970340), (4, 4985170), (5, 3988136), (8, 2492585), (10, 1994068), (20, 997034), (40, 498517), (73, 273160), (146, 136580), (292, 68290), (365, 54632), (584, 34145), (730, 27316), (1460, 13658), (2920, 6829)]