256640400

素因数分解:

$2^4\times 3^4\times 5^2\times {\mathrm{89}}^2$

素因数の和:208

約数の個数: 225

約数和(自身を含む): 931527091

約数和(自身を除く): 674886691

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 81, 89, 90, 100, 108, 120, 135, 144, 150, 162, 178, 180, 200, 216, 225, 240, 267, 270, 300, 324, 356, 360, 400, 405, 432, 445, 450, 534, 540, 600, 648, 675, 712, 720, 801, 810, 890, 900, 1068, 1080, 1200, 1296, 1335, 1350, 1424, 1602, 1620, 1780, 1800, 2025, 2136, 2160, 2225, 2403, 2670, 2700, 3204, 3240, 3560, 3600, 4005, 4050, 4272, 4450, 4806, 5340, 5400, 6408, 6480, 6675, 7120, 7209, 7921, 8010, 8100, 8900, 9612, 10680, 10800, 12015, 12816, 13350, 14418, 15842, 16020, 16200, 17800, 19224, 20025, 21360, 23763, 24030, 26700, 28836, 31684, 32040, 32400, 35600, 36045, 38448, 39605, 40050, 47526, 48060, 53400, 57672, 60075, 63368, 64080, 71289, 72090, 79210, 80100, 95052, 96120, 106800, 115344, 118815, 120150, 126736, 142578, 144180, 158420, 160200, 180225, 190104, 192240, 198025, 213867, 237630, 240300, 285156, 288360, 316840, 320400, 356445, 360450, 380208, 396050, 427734, 475260, 480600, 570312, 576720, 594075, 633680, 641601, 712890, 720900, 792100, 855468, 950520, 961200, 1069335, 1140624, 1188150, 1283202, 1425780, 1441800, 1584200, 1710936, 1782225, 1901040, 2138670, 2376300, 2566404, 2851560, 2883600, 3168400, 3208005, 3421872, 3564450, 4277340, 4752600, 5132808, 5346675, 5703120, 6416010, 7128900, 8554680, 9505200, 10265616, 10693350, 12832020, 14257800, 16040025, 17109360, 21386700, 25664040, 28515600, 32080050, 42773400, 51328080, 64160100, 85546800, 128320200, 256640400]

約数ペア:

[(1, 256640400), (2, 128320200), (3, 85546800), (4, 64160100), (5, 51328080), (6, 42773400), (8, 32080050), (9, 28515600), (10, 25664040), (12, 21386700), (15, 17109360), (16, 16040025), (18, 14257800), (20, 12832020), (24, 10693350), (25, 10265616), (27, 9505200), (30, 8554680), (36, 7128900), (40, 6416010), (45, 5703120), (48, 5346675), (50, 5132808), (54, 4752600), (60, 4277340), (72, 3564450), (75, 3421872), (80, 3208005), (81, 3168400), (89, 2883600), (90, 2851560), (100, 2566404), (108, 2376300), (120, 2138670), (135, 1901040), (144, 1782225), (150, 1710936), (162, 1584200), (178, 1441800), (180, 1425780), (200, 1283202), (216, 1188150), (225, 1140624), (240, 1069335), (267, 961200), (270, 950520), (300, 855468), (324, 792100), (356, 720900), (360, 712890), (400, 641601), (405, 633680), (432, 594075), (445, 576720), (450, 570312), (534, 480600), (540, 475260), (600, 427734), (648, 396050), (675, 380208), (712, 360450), (720, 356445), (801, 320400), (810, 316840), (890, 288360), (900, 285156), (1068, 240300), (1080, 237630), (1200, 213867), (1296, 198025), (1335, 192240), (1350, 190104), (1424, 180225), (1602, 160200), (1620, 158420), (1780, 144180), (1800, 142578), (2025, 126736), (2136, 120150), (2160, 118815), (2225, 115344), (2403, 106800), (2670, 96120), (2700, 95052), (3204, 80100), (3240, 79210), (3560, 72090), (3600, 71289), (4005, 64080), (4050, 63368), (4272, 60075), (4450, 57672), (4806, 53400), (5340, 48060), (5400, 47526), (6408, 40050), (6480, 39605), (6675, 38448), (7120, 36045), (7209, 35600), (7921, 32400), (8010, 32040), (8100, 31684), (8900, 28836), (9612, 26700), (10680, 24030), (10800, 23763), (12015, 21360), (12816, 20025), (13350, 19224), (14418, 17800), (15842, 16200)]