641480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 64

約数和(自身を含む): 1728000

約数和(自身を除く): 1086520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 79, 116, 140, 145, 158, 203, 232, 280, 290, 316, 395, 406, 553, 580, 632, 790, 812, 1015, 1106, 1160, 1580, 1624, 2030, 2212, 2291, 2765, 3160, 4060, 4424, 4582, 5530, 8120, 9164, 11060, 11455, 16037, 18328, 22120, 22910, 32074, 45820, 64148, 80185, 91640, 128296, 160370, 320740, 641480]

約数ペア:

[(1, 641480), (2, 320740), (4, 160370), (5, 128296), (7, 91640), (8, 80185), (10, 64148), (14, 45820), (20, 32074), (28, 22910), (29, 22120), (35, 18328), (40, 16037), (56, 11455), (58, 11060), (70, 9164), (79, 8120), (116, 5530), (140, 4582), (145, 4424), (158, 4060), (203, 3160), (232, 2765), (280, 2291), (290, 2212), (316, 2030), (395, 1624), (406, 1580), (553, 1160), (580, 1106), (632, 1015), (790, 812)]