81230240

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{797}}^1$

素因数の和:839

約数の個数: 144

約数和(自身を含む): 240711912

約数和(自身を除く): 159481672

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 364, 392, 416, 455, 490, 520, 560, 637, 728, 784, 797, 910, 980, 1040, 1120, 1274, 1456, 1568, 1594, 1820, 1960, 2080, 2548, 2912, 3185, 3188, 3640, 3920, 3985, 5096, 5579, 6370, 6376, 7280, 7840, 7970, 10192, 10361, 11158, 12740, 12752, 14560, 15940, 20384, 20722, 22316, 25480, 25504, 27895, 31880, 39053, 41444, 44632, 50960, 51805, 55790, 63760, 72527, 78106, 82888, 89264, 101920, 103610, 111580, 127520, 145054, 156212, 165776, 178528, 195265, 207220, 223160, 290108, 312424, 331552, 362635, 390530, 414440, 446320, 507689, 580216, 624848, 725270, 781060, 828880, 892640, 1015378, 1160432, 1249696, 1450540, 1562120, 1657760, 2030756, 2320864, 2538445, 2901080, 3124240, 4061512, 5076890, 5802160, 6248480, 8123024, 10153780, 11604320, 16246048, 20307560, 40615120, 81230240]

約数ペア:

[(1, 81230240), (2, 40615120), (4, 20307560), (5, 16246048), (7, 11604320), (8, 10153780), (10, 8123024), (13, 6248480), (14, 5802160), (16, 5076890), (20, 4061512), (26, 3124240), (28, 2901080), (32, 2538445), (35, 2320864), (40, 2030756), (49, 1657760), (52, 1562120), (56, 1450540), (65, 1249696), (70, 1160432), (80, 1015378), (91, 892640), (98, 828880), (104, 781060), (112, 725270), (130, 624848), (140, 580216), (160, 507689), (182, 446320), (196, 414440), (208, 390530), (224, 362635), (245, 331552), (260, 312424), (280, 290108), (364, 223160), (392, 207220), (416, 195265), (455, 178528), (490, 165776), (520, 156212), (560, 145054), (637, 127520), (728, 111580), (784, 103610), (797, 101920), (910, 89264), (980, 82888), (1040, 78106), (1120, 72527), (1274, 63760), (1456, 55790), (1568, 51805), (1594, 50960), (1820, 44632), (1960, 41444), (2080, 39053), (2548, 31880), (2912, 27895), (3185, 25504), (3188, 25480), (3640, 22316), (3920, 20722), (3985, 20384), (5096, 15940), (5579, 14560), (6370, 12752), (6376, 12740), (7280, 11158), (7840, 10361), (7970, 10192)]