21987504

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:696

約数の個数: 160

約数和(自身を含む): 78804480

約数和(自身を除く): 56816976

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 33, 36, 42, 44, 48, 54, 56, 63, 66, 72, 77, 84, 88, 99, 108, 112, 126, 132, 144, 154, 168, 176, 189, 198, 216, 231, 252, 264, 297, 308, 336, 378, 396, 432, 462, 504, 528, 594, 616, 661, 693, 756, 792, 924, 1008, 1188, 1232, 1322, 1386, 1512, 1584, 1848, 1983, 2079, 2376, 2644, 2772, 3024, 3696, 3966, 4158, 4627, 4752, 5288, 5544, 5949, 7271, 7932, 8316, 9254, 10576, 11088, 11898, 13881, 14542, 15864, 16632, 17847, 18508, 21813, 23796, 27762, 29084, 31728, 33264, 35694, 37016, 41643, 43626, 47592, 50897, 55524, 58168, 65439, 71388, 74032, 83286, 87252, 95184, 101794, 111048, 116336, 124929, 130878, 142776, 152691, 166572, 174504, 196317, 203588, 222096, 249858, 261756, 285552, 305382, 333144, 349008, 392634, 407176, 458073, 499716, 523512, 610764, 666288, 785268, 814352, 916146, 999432, 1047024, 1221528, 1374219, 1570536, 1832292, 1998864, 2443056, 2748438, 3141072, 3664584, 5496876, 7329168, 10993752, 21987504]

約数ペア:

[(1, 21987504), (2, 10993752), (3, 7329168), (4, 5496876), (6, 3664584), (7, 3141072), (8, 2748438), (9, 2443056), (11, 1998864), (12, 1832292), (14, 1570536), (16, 1374219), (18, 1221528), (21, 1047024), (22, 999432), (24, 916146), (27, 814352), (28, 785268), (33, 666288), (36, 610764), (42, 523512), (44, 499716), (48, 458073), (54, 407176), (56, 392634), (63, 349008), (66, 333144), (72, 305382), (77, 285552), (84, 261756), (88, 249858), (99, 222096), (108, 203588), (112, 196317), (126, 174504), (132, 166572), (144, 152691), (154, 142776), (168, 130878), (176, 124929), (189, 116336), (198, 111048), (216, 101794), (231, 95184), (252, 87252), (264, 83286), (297, 74032), (308, 71388), (336, 65439), (378, 58168), (396, 55524), (432, 50897), (462, 47592), (504, 43626), (528, 41643), (594, 37016), (616, 35694), (661, 33264), (693, 31728), (756, 29084), (792, 27762), (924, 23796), (1008, 21813), (1188, 18508), (1232, 17847), (1322, 16632), (1386, 15864), (1512, 14542), (1584, 13881), (1848, 11898), (1983, 11088), (2079, 10576), (2376, 9254), (2644, 8316), (2772, 7932), (3024, 7271), (3696, 5949), (3966, 5544), (4158, 5288), (4627, 4752)]