808389620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{12479}}^1$

素因数の和:12608

約数の個数: 48

約数和(自身を含む): 1761177600

約数和(自身を除く): 952787980

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 790, 820, 1580, 3239, 6478, 12479, 12956, 16195, 24958, 32390, 49916, 62395, 64780, 124790, 249580, 511639, 985841, 1023278, 1971682, 2046556, 2558195, 3943364, 4929205, 5116390, 9858410, 10232780, 19716820, 40419481, 80838962, 161677924, 202097405, 404194810, 808389620]

約数ペア:

[(1, 808389620), (2, 404194810), (4, 202097405), (5, 161677924), (10, 80838962), (20, 40419481), (41, 19716820), (79, 10232780), (82, 9858410), (158, 5116390), (164, 4929205), (205, 3943364), (316, 2558195), (395, 2046556), (410, 1971682), (790, 1023278), (820, 985841), (1580, 511639), (3239, 249580), (6478, 124790), (12479, 64780), (12956, 62395), (16195, 49916), (24958, 32390)]