81141440

素因数分解:

$2^6\times 5^1\times {\mathrm{253567}}^1$

素因数の和:253584

約数の個数: 28

約数和(自身を含む): 193218816

約数和(自身を除く): 112077376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 253567, 507134, 1014268, 1267835, 2028536, 2535670, 4057072, 5071340, 8114144, 10142680, 16228288, 20285360, 40570720, 81141440]

約数ペア:

[(1, 81141440), (2, 40570720), (4, 20285360), (5, 16228288), (8, 10142680), (10, 8114144), (16, 5071340), (20, 4057072), (32, 2535670), (40, 2028536), (64, 1267835), (80, 1014268), (160, 507134), (320, 253567)]