19680440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37847}}^1$

素因数の和:37871

約数の個数: 32

約数和(自身を含む): 47688480

約数和(自身を除く): 28008040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37847, 75694, 151388, 189235, 302776, 378470, 492011, 756940, 984022, 1513880, 1968044, 2460055, 3936088, 4920110, 9840220, 19680440]

約数ペア:

[(1, 19680440), (2, 9840220), (4, 4920110), (5, 3936088), (8, 2460055), (10, 1968044), (13, 1513880), (20, 984022), (26, 756940), (40, 492011), (52, 378470), (65, 302776), (104, 189235), (130, 151388), (260, 75694), (520, 37847)]