81535760

素因数分解:

$2^4\times 5^1\times {\mathrm{1019197}}^1$

素因数の和:1019210

約数の個数: 20

約数和(自身を含む): 189570828

約数和(自身を除く): 108035068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1019197, 2038394, 4076788, 5095985, 8153576, 10191970, 16307152, 20383940, 40767880, 81535760]

約数ペア:

[(1, 81535760), (2, 40767880), (4, 20383940), (5, 16307152), (8, 10191970), (10, 8153576), (16, 5095985), (20, 4076788), (40, 2038394), (80, 1019197)]