81251280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10259}}^1$

素因数の和:10289

約数の個数: 120

約数和(自身を含む): 297704160

約数和(自身を除く): 216452880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2640, 3960, 7920, 10259, 20518, 30777, 41036, 51295, 61554, 82072, 92331, 102590, 112849, 123108, 153885, 164144, 184662, 205180, 225698, 246216, 307770, 338547, 369324, 410360, 451396, 461655, 492432, 564245, 615540, 677094, 738648, 820720, 902792, 923310, 1015641, 1128490, 1231080, 1354188, 1477296, 1692735, 1805584, 1846620, 2031282, 2256980, 2462160, 2708376, 3385470, 3693240, 4062564, 4513960, 5078205, 5416752, 6770940, 7386480, 8125128, 9027920, 10156410, 13541880, 16250256, 20312820, 27083760, 40625640, 81251280]

約数ペア:

[(1, 81251280), (2, 40625640), (3, 27083760), (4, 20312820), (5, 16250256), (6, 13541880), (8, 10156410), (9, 9027920), (10, 8125128), (11, 7386480), (12, 6770940), (15, 5416752), (16, 5078205), (18, 4513960), (20, 4062564), (22, 3693240), (24, 3385470), (30, 2708376), (33, 2462160), (36, 2256980), (40, 2031282), (44, 1846620), (45, 1805584), (48, 1692735), (55, 1477296), (60, 1354188), (66, 1231080), (72, 1128490), (80, 1015641), (88, 923310), (90, 902792), (99, 820720), (110, 738648), (120, 677094), (132, 615540), (144, 564245), (165, 492432), (176, 461655), (180, 451396), (198, 410360), (220, 369324), (240, 338547), (264, 307770), (330, 246216), (360, 225698), (396, 205180), (440, 184662), (495, 164144), (528, 153885), (660, 123108), (720, 112849), (792, 102590), (880, 92331), (990, 82072), (1320, 61554), (1584, 51295), (1980, 41036), (2640, 30777), (3960, 20518), (7920, 10259)]