19877704

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 96

約数和(自身を含む): 49371840

約数和(自身を除く): 29494136

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 61, 77, 88, 92, 122, 154, 161, 184, 244, 253, 308, 322, 427, 488, 506, 529, 616, 644, 671, 854, 1012, 1058, 1288, 1342, 1403, 1708, 1771, 2024, 2116, 2684, 2806, 3416, 3542, 3703, 4232, 4697, 5368, 5612, 5819, 7084, 7406, 9394, 9821, 11224, 11638, 14168, 14812, 15433, 18788, 19642, 23276, 29624, 30866, 32269, 37576, 39284, 40733, 46552, 61732, 64538, 78568, 81466, 108031, 123464, 129076, 162932, 216062, 225883, 258152, 325864, 354959, 432124, 451766, 709918, 864248, 903532, 1419836, 1807064, 2484713, 2839672, 4969426, 9938852, 19877704]

約数ペア:

[(1, 19877704), (2, 9938852), (4, 4969426), (7, 2839672), (8, 2484713), (11, 1807064), (14, 1419836), (22, 903532), (23, 864248), (28, 709918), (44, 451766), (46, 432124), (56, 354959), (61, 325864), (77, 258152), (88, 225883), (92, 216062), (122, 162932), (154, 129076), (161, 123464), (184, 108031), (244, 81466), (253, 78568), (308, 64538), (322, 61732), (427, 46552), (488, 40733), (506, 39284), (529, 37576), (616, 32269), (644, 30866), (671, 29624), (854, 23276), (1012, 19642), (1058, 18788), (1288, 15433), (1342, 14812), (1403, 14168), (1708, 11638), (1771, 11224), (2024, 9821), (2116, 9394), (2684, 7406), (2806, 7084), (3416, 5819), (3542, 5612), (3703, 5368), (4232, 4697)]