81277740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10501}}^1$

素因数の和:10559

約数の個数: 72

約数和(自身を含む): 252300048

約数和(自身を除く): 171022308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 10501, 21002, 31503, 42004, 52505, 63006, 94509, 105010, 126012, 157515, 189018, 210020, 315030, 378036, 451543, 472545, 630060, 903086, 945090, 1354629, 1806172, 1890180, 2257715, 2709258, 4063887, 4515430, 5418516, 6773145, 8127774, 9030860, 13546290, 16255548, 20319435, 27092580, 40638870, 81277740]

約数ペア:

[(1, 81277740), (2, 40638870), (3, 27092580), (4, 20319435), (5, 16255548), (6, 13546290), (9, 9030860), (10, 8127774), (12, 6773145), (15, 5418516), (18, 4515430), (20, 4063887), (30, 2709258), (36, 2257715), (43, 1890180), (45, 1806172), (60, 1354629), (86, 945090), (90, 903086), (129, 630060), (172, 472545), (180, 451543), (215, 378036), (258, 315030), (387, 210020), (430, 189018), (516, 157515), (645, 126012), (774, 105010), (860, 94509), (1290, 63006), (1548, 52505), (1935, 42004), (2580, 31503), (3870, 21002), (7740, 10501)]