81719456

素因数分解:

$2^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 213161760

約数和(自身を除く): 131442304

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 49, 52, 56, 76, 91, 98, 104, 112, 133, 152, 182, 196, 208, 211, 224, 247, 266, 304, 364, 392, 416, 422, 494, 532, 608, 637, 728, 784, 844, 931, 988, 1064, 1274, 1456, 1477, 1568, 1688, 1729, 1862, 1976, 2128, 2548, 2743, 2912, 2954, 3376, 3458, 3724, 3952, 4009, 4256, 5096, 5486, 5908, 6752, 6916, 7448, 7904, 8018, 10192, 10339, 10972, 11816, 12103, 13832, 14896, 16036, 19201, 20384, 20678, 21944, 23632, 24206, 27664, 28063, 29792, 32072, 38402, 41356, 43888, 47264, 48412, 52117, 55328, 56126, 64144, 76804, 82712, 87776, 96824, 104234, 112252, 128288, 134407, 153608, 165424, 193648, 196441, 208468, 224504, 268814, 307216, 330848, 364819, 387296, 392882, 416936, 449008, 537628, 614432, 729638, 785764, 833872, 898016, 1075256, 1459276, 1571528, 1667744, 2150512, 2553733, 2918552, 3143056, 4301024, 5107466, 5837104, 6286112, 10214932, 11674208, 20429864, 40859728, 81719456]

約数ペア:

[(1, 81719456), (2, 40859728), (4, 20429864), (7, 11674208), (8, 10214932), (13, 6286112), (14, 5837104), (16, 5107466), (19, 4301024), (26, 3143056), (28, 2918552), (32, 2553733), (38, 2150512), (49, 1667744), (52, 1571528), (56, 1459276), (76, 1075256), (91, 898016), (98, 833872), (104, 785764), (112, 729638), (133, 614432), (152, 537628), (182, 449008), (196, 416936), (208, 392882), (211, 387296), (224, 364819), (247, 330848), (266, 307216), (304, 268814), (364, 224504), (392, 208468), (416, 196441), (422, 193648), (494, 165424), (532, 153608), (608, 134407), (637, 128288), (728, 112252), (784, 104234), (844, 96824), (931, 87776), (988, 82712), (1064, 76804), (1274, 64144), (1456, 56126), (1477, 55328), (1568, 52117), (1688, 48412), (1729, 47264), (1862, 43888), (1976, 41356), (2128, 38402), (2548, 32072), (2743, 29792), (2912, 28063), (2954, 27664), (3376, 24206), (3458, 23632), (3724, 21944), (3952, 20678), (4009, 20384), (4256, 19201), (5096, 16036), (5486, 14896), (5908, 13832), (6752, 12103), (6916, 11816), (7448, 10972), (7904, 10339), (8018, 10192)]