81650560

素因数分解:

$2^7\times 5^1\times {\mathrm{127579}}^1$

素因数の和:127598

約数の個数: 32

約数和(自身を含む): 195197400

約数和(自身を除く): 113546840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127579, 255158, 510316, 637895, 1020632, 1275790, 2041264, 2551580, 4082528, 5103160, 8165056, 10206320, 16330112, 20412640, 40825280, 81650560]

約数ペア:

[(1, 81650560), (2, 40825280), (4, 20412640), (5, 16330112), (8, 10206320), (10, 8165056), (16, 5103160), (20, 4082528), (32, 2551580), (40, 2041264), (64, 1275790), (80, 1020632), (128, 637895), (160, 510316), (320, 255158), (640, 127579)]