81403208

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 163956420

約数和(自身を除く): 82553212

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 137, 257, 274, 289, 514, 548, 578, 1028, 1096, 1156, 2056, 2312, 2329, 4369, 4658, 8738, 9316, 17476, 18632, 34952, 35209, 39593, 70418, 74273, 79186, 140836, 148546, 158372, 281672, 297092, 316744, 594184, 598553, 1197106, 2394212, 4788424, 10175401, 20350802, 40701604, 81403208]

約数ペア:

[(1, 81403208), (2, 40701604), (4, 20350802), (8, 10175401), (17, 4788424), (34, 2394212), (68, 1197106), (136, 598553), (137, 594184), (257, 316744), (274, 297092), (289, 281672), (514, 158372), (548, 148546), (578, 140836), (1028, 79186), (1096, 74273), (1156, 70418), (2056, 39593), (2312, 35209), (2329, 34952), (4369, 18632), (4658, 17476), (8738, 9316)]