81039280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3079}}^1$

素因数の和:3146

約数の個数: 80

約数和(自身を含む): 219985920

約数和(自身を除く): 138946640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 560, 658, 752, 940, 1316, 1645, 1880, 2632, 3079, 3290, 3760, 5264, 6158, 6580, 12316, 13160, 15395, 21553, 24632, 26320, 30790, 43106, 49264, 61580, 86212, 107765, 123160, 144713, 172424, 215530, 246320, 289426, 344848, 431060, 578852, 723565, 862120, 1012991, 1157704, 1447130, 1724240, 2025982, 2315408, 2894260, 4051964, 5064955, 5788520, 8103928, 10129910, 11577040, 16207856, 20259820, 40519640, 81039280]

約数ペア:

[(1, 81039280), (2, 40519640), (4, 20259820), (5, 16207856), (7, 11577040), (8, 10129910), (10, 8103928), (14, 5788520), (16, 5064955), (20, 4051964), (28, 2894260), (35, 2315408), (40, 2025982), (47, 1724240), (56, 1447130), (70, 1157704), (80, 1012991), (94, 862120), (112, 723565), (140, 578852), (188, 431060), (235, 344848), (280, 289426), (329, 246320), (376, 215530), (470, 172424), (560, 144713), (658, 123160), (752, 107765), (940, 86212), (1316, 61580), (1645, 49264), (1880, 43106), (2632, 30790), (3079, 26320), (3290, 24632), (3760, 21553), (5264, 15395), (6158, 13160), (6580, 12316)]