81545568

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{181}}^1$

素因数の和:245

約数の個数: 144

約数和(自身を含む): 244638576

約数和(自身を除く): 163093008

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 32, 38, 39, 48, 52, 57, 76, 78, 96, 104, 114, 152, 156, 181, 208, 228, 247, 304, 312, 361, 362, 416, 456, 494, 543, 608, 624, 722, 724, 741, 912, 988, 1083, 1086, 1248, 1444, 1448, 1482, 1824, 1976, 2166, 2172, 2353, 2888, 2896, 2964, 3439, 3952, 4332, 4344, 4693, 4706, 5776, 5792, 5928, 6878, 7059, 7904, 8664, 8688, 9386, 9412, 10317, 11552, 11856, 13756, 14079, 14118, 17328, 17376, 18772, 18824, 20634, 23712, 27512, 28158, 28236, 34656, 37544, 37648, 41268, 44707, 55024, 56316, 56472, 65341, 75088, 75296, 82536, 89414, 110048, 112632, 112944, 130682, 134121, 150176, 165072, 178828, 196023, 225264, 225888, 261364, 268242, 330144, 357656, 392046, 450528, 522728, 536484, 715312, 784092, 849433, 1045456, 1072968, 1430624, 1568184, 1698866, 2090912, 2145936, 2548299, 3136368, 3397732, 4291872, 5096598, 6272736, 6795464, 10193196, 13590928, 20386392, 27181856, 40772784, 81545568]

約数ペア:

[(1, 81545568), (2, 40772784), (3, 27181856), (4, 20386392), (6, 13590928), (8, 10193196), (12, 6795464), (13, 6272736), (16, 5096598), (19, 4291872), (24, 3397732), (26, 3136368), (32, 2548299), (38, 2145936), (39, 2090912), (48, 1698866), (52, 1568184), (57, 1430624), (76, 1072968), (78, 1045456), (96, 849433), (104, 784092), (114, 715312), (152, 536484), (156, 522728), (181, 450528), (208, 392046), (228, 357656), (247, 330144), (304, 268242), (312, 261364), (361, 225888), (362, 225264), (416, 196023), (456, 178828), (494, 165072), (543, 150176), (608, 134121), (624, 130682), (722, 112944), (724, 112632), (741, 110048), (912, 89414), (988, 82536), (1083, 75296), (1086, 75088), (1248, 65341), (1444, 56472), (1448, 56316), (1482, 55024), (1824, 44707), (1976, 41268), (2166, 37648), (2172, 37544), (2353, 34656), (2888, 28236), (2896, 28158), (2964, 27512), (3439, 23712), (3952, 20634), (4332, 18824), (4344, 18772), (4693, 17376), (4706, 17328), (5776, 14118), (5792, 14079), (5928, 13756), (6878, 11856), (7059, 11552), (7904, 10317), (8664, 9412), (8688, 9386)]