19810880

素因数分解:

$2^6\times 5^1\times {\mathrm{61909}}^1$

素因数の和:61926

約数の個数: 28

約数和(自身を含む): 47175420

約数和(自身を除く): 27364540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 61909, 123818, 247636, 309545, 495272, 619090, 990544, 1238180, 1981088, 2476360, 3962176, 4952720, 9905440, 19810880]

約数ペア:

[(1, 19810880), (2, 9905440), (4, 4952720), (5, 3962176), (8, 2476360), (10, 1981088), (16, 1238180), (20, 990544), (32, 619090), (40, 495272), (64, 309545), (80, 247636), (160, 123818), (320, 61909)]