86781880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30557}}^1$

素因数の和:30639

約数の個数: 32

約数和(自身を含む): 198015840

約数和(自身を除く): 111233960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 30557, 61114, 122228, 152785, 244456, 305570, 611140, 1222280, 2169547, 4339094, 8678188, 10847735, 17356376, 21695470, 43390940, 86781880]

約数ペア:

[(1, 86781880), (2, 43390940), (4, 21695470), (5, 17356376), (8, 10847735), (10, 8678188), (20, 4339094), (40, 2169547), (71, 1222280), (142, 611140), (284, 305570), (355, 244456), (568, 152785), (710, 122228), (1420, 61114), (2840, 30557)]