320740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:124

約数の個数: 48

約数和(自身を含む): 806400

約数和(自身を除く): 485660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 79, 116, 140, 145, 158, 203, 290, 316, 395, 406, 553, 580, 790, 812, 1015, 1106, 1580, 2030, 2212, 2291, 2765, 4060, 4582, 5530, 9164, 11060, 11455, 16037, 22910, 32074, 45820, 64148, 80185, 160370, 320740]

約数ペア:

[(1, 320740), (2, 160370), (4, 80185), (5, 64148), (7, 45820), (10, 32074), (14, 22910), (20, 16037), (28, 11455), (29, 11060), (35, 9164), (58, 5530), (70, 4582), (79, 4060), (116, 2765), (140, 2291), (145, 2212), (158, 2030), (203, 1580), (290, 1106), (316, 1015), (395, 812), (406, 790), (553, 580)]