81455640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{1979}}^1$

素因数の和:2014

約数の個数: 128

約数和(自身を含む): 285120000

約数和(自身を除く): 203664360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 490, 588, 686, 735, 840, 980, 1029, 1176, 1372, 1470, 1715, 1960, 1979, 2058, 2744, 2940, 3430, 3958, 4116, 5145, 5880, 5937, 6860, 7916, 8232, 9895, 10290, 11874, 13720, 13853, 15832, 19790, 20580, 23748, 27706, 29685, 39580, 41160, 41559, 47496, 55412, 59370, 69265, 79160, 83118, 96971, 110824, 118740, 138530, 166236, 193942, 207795, 237480, 277060, 290913, 332472, 387884, 415590, 484855, 554120, 581826, 678797, 775768, 831180, 969710, 1163652, 1357594, 1454565, 1662360, 1939420, 2036391, 2327304, 2715188, 2909130, 3393985, 3878840, 4072782, 5430376, 5818260, 6787970, 8145564, 10181955, 11636520, 13575940, 16291128, 20363910, 27151880, 40727820, 81455640]

約数ペア:

[(1, 81455640), (2, 40727820), (3, 27151880), (4, 20363910), (5, 16291128), (6, 13575940), (7, 11636520), (8, 10181955), (10, 8145564), (12, 6787970), (14, 5818260), (15, 5430376), (20, 4072782), (21, 3878840), (24, 3393985), (28, 2909130), (30, 2715188), (35, 2327304), (40, 2036391), (42, 1939420), (49, 1662360), (56, 1454565), (60, 1357594), (70, 1163652), (84, 969710), (98, 831180), (105, 775768), (120, 678797), (140, 581826), (147, 554120), (168, 484855), (196, 415590), (210, 387884), (245, 332472), (280, 290913), (294, 277060), (343, 237480), (392, 207795), (420, 193942), (490, 166236), (588, 138530), (686, 118740), (735, 110824), (840, 96971), (980, 83118), (1029, 79160), (1176, 69265), (1372, 59370), (1470, 55412), (1715, 47496), (1960, 41559), (1979, 41160), (2058, 39580), (2744, 29685), (2940, 27706), (3430, 23748), (3958, 20580), (4116, 19790), (5145, 15832), (5880, 13853), (5937, 13720), (6860, 11874), (7916, 10290), (8232, 9895)]