81535360

素因数分解:

$2^7\times 5^1\times {\mathrm{127399}}^1$

素因数の和:127418

約数の個数: 32

約数和(自身を含む): 194922000

約数和(自身を除く): 113386640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127399, 254798, 509596, 636995, 1019192, 1273990, 2038384, 2547980, 4076768, 5095960, 8153536, 10191920, 16307072, 20383840, 40767680, 81535360]

約数ペア:

[(1, 81535360), (2, 40767680), (4, 20383840), (5, 16307072), (8, 10191920), (10, 8153536), (16, 5095960), (20, 4076768), (32, 2547980), (40, 2038384), (64, 1273990), (80, 1019192), (128, 636995), (160, 509596), (320, 254798), (640, 127399)]