20638136

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{577}}^1$

素因数の和:863

約数の個数: 32

約数和(自身を含む): 41199840

約数和(自身を除く): 20561704

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 263, 526, 577, 1052, 1154, 2104, 2308, 4471, 4616, 8942, 9809, 17884, 19618, 35768, 39236, 78472, 151751, 303502, 607004, 1214008, 2579767, 5159534, 10319068, 20638136]

約数ペア:

[(1, 20638136), (2, 10319068), (4, 5159534), (8, 2579767), (17, 1214008), (34, 607004), (68, 303502), (136, 151751), (263, 78472), (526, 39236), (577, 35768), (1052, 19618), (1154, 17884), (2104, 9809), (2308, 8942), (4471, 4616)]