81540900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^2\times {\mathrm{43}}^2$

素因数の和:120

約数の個数: 243

約数和(自身を含む): 304388721

約数和(自身を除く): 222847821

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 43, 45, 49, 50, 60, 63, 70, 75, 84, 86, 90, 98, 100, 105, 126, 129, 140, 147, 150, 172, 175, 180, 196, 210, 215, 225, 245, 252, 258, 294, 300, 301, 315, 350, 387, 420, 430, 441, 450, 490, 516, 525, 588, 602, 630, 645, 700, 735, 774, 860, 882, 900, 903, 980, 1050, 1075, 1204, 1225, 1260, 1290, 1470, 1505, 1548, 1575, 1764, 1806, 1849, 1935, 2100, 2107, 2150, 2205, 2450, 2580, 2709, 2940, 3010, 3150, 3225, 3612, 3675, 3698, 3870, 4214, 4300, 4410, 4515, 4900, 5418, 5547, 6020, 6300, 6321, 6450, 7350, 7396, 7525, 7740, 8428, 8820, 9030, 9245, 9675, 10535, 10836, 11025, 11094, 12642, 12900, 12943, 13545, 14700, 15050, 16641, 18060, 18490, 18963, 19350, 21070, 22050, 22188, 22575, 25284, 25886, 27090, 27735, 30100, 31605, 33282, 36980, 37926, 38700, 38829, 42140, 44100, 45150, 46225, 51772, 52675, 54180, 55470, 63210, 64715, 66564, 67725, 75852, 77658, 83205, 90300, 90601, 92450, 94815, 105350, 110940, 116487, 126420, 129430, 135450, 138675, 155316, 158025, 166410, 181202, 184900, 189630, 194145, 210700, 232974, 258860, 270900, 271803, 277350, 316050, 323575, 332820, 362404, 379260, 388290, 416025, 453005, 465948, 474075, 543606, 554700, 582435, 632100, 647150, 776580, 815409, 832050, 906010, 948150, 970725, 1087212, 1164870, 1294300, 1359015, 1630818, 1664100, 1812020, 1896300, 1941450, 2265025, 2329740, 2718030, 2912175, 3261636, 3882900, 4077045, 4530050, 5436060, 5824350, 6795075, 8154090, 9060100, 11648700, 13590150, 16308180, 20385225, 27180300, 40770450, 81540900]

約数ペア:

[(1, 81540900), (2, 40770450), (3, 27180300), (4, 20385225), (5, 16308180), (6, 13590150), (7, 11648700), (9, 9060100), (10, 8154090), (12, 6795075), (14, 5824350), (15, 5436060), (18, 4530050), (20, 4077045), (21, 3882900), (25, 3261636), (28, 2912175), (30, 2718030), (35, 2329740), (36, 2265025), (42, 1941450), (43, 1896300), (45, 1812020), (49, 1664100), (50, 1630818), (60, 1359015), (63, 1294300), (70, 1164870), (75, 1087212), (84, 970725), (86, 948150), (90, 906010), (98, 832050), (100, 815409), (105, 776580), (126, 647150), (129, 632100), (140, 582435), (147, 554700), (150, 543606), (172, 474075), (175, 465948), (180, 453005), (196, 416025), (210, 388290), (215, 379260), (225, 362404), (245, 332820), (252, 323575), (258, 316050), (294, 277350), (300, 271803), (301, 270900), (315, 258860), (350, 232974), (387, 210700), (420, 194145), (430, 189630), (441, 184900), (450, 181202), (490, 166410), (516, 158025), (525, 155316), (588, 138675), (602, 135450), (630, 129430), (645, 126420), (700, 116487), (735, 110940), (774, 105350), (860, 94815), (882, 92450), (900, 90601), (903, 90300), (980, 83205), (1050, 77658), (1075, 75852), (1204, 67725), (1225, 66564), (1260, 64715), (1290, 63210), (1470, 55470), (1505, 54180), (1548, 52675), (1575, 51772), (1764, 46225), (1806, 45150), (1849, 44100), (1935, 42140), (2100, 38829), (2107, 38700), (2150, 37926), (2205, 36980), (2450, 33282), (2580, 31605), (2709, 30100), (2940, 27735), (3010, 27090), (3150, 25886), (3225, 25284), (3612, 22575), (3675, 22188), (3698, 22050), (3870, 21070), (4214, 19350), (4300, 18963), (4410, 18490), (4515, 18060), (4900, 16641), (5418, 15050), (5547, 14700), (6020, 13545), (6300, 12943), (6321, 12900), (6450, 12642), (7350, 11094), (7396, 11025), (7525, 10836), (7740, 10535), (8428, 9675), (8820, 9245)]