81808580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{584347}}^1$

素因数の和:584363

約数の個数: 24

約数和(自身を含む): 196340928

約数和(自身を除く): 114532348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 584347, 1168694, 2337388, 2921735, 4090429, 5843470, 8180858, 11686940, 16361716, 20452145, 40904290, 81808580]

約数ペア:

[(1, 81808580), (2, 40904290), (4, 20452145), (5, 16361716), (7, 11686940), (10, 8180858), (14, 5843470), (20, 4090429), (28, 2921735), (35, 2337388), (70, 1168694), (140, 584347)]