81290240

素因数分解:

$2^{10}\times 5^1\times {\mathrm{15877}}^1$

素因数の和:15902

約数の個数: 44

約数和(自身を含む): 195013596

約数和(自身を除く): 113723356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 15877, 31754, 63508, 79385, 127016, 158770, 254032, 317540, 508064, 635080, 1016128, 1270160, 2032256, 2540320, 4064512, 5080640, 8129024, 10161280, 16258048, 20322560, 40645120, 81290240]

約数ペア:

[(1, 81290240), (2, 40645120), (4, 20322560), (5, 16258048), (8, 10161280), (10, 8129024), (16, 5080640), (20, 4064512), (32, 2540320), (40, 2032256), (64, 1270160), (80, 1016128), (128, 635080), (160, 508064), (256, 317540), (320, 254032), (512, 158770), (640, 127016), (1024, 79385), (1280, 63508), (2560, 31754), (5120, 15877)]