21643128

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1217}}^1$

素因数の和:1261

約数の個数: 96

約数和(自身を含む): 66502800

約数和(自身を除く): 44859672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 19, 24, 26, 36, 38, 39, 52, 57, 72, 76, 78, 104, 114, 117, 152, 156, 171, 228, 234, 247, 312, 342, 456, 468, 494, 684, 741, 936, 988, 1217, 1368, 1482, 1976, 2223, 2434, 2964, 3651, 4446, 4868, 5928, 7302, 8892, 9736, 10953, 14604, 15821, 17784, 21906, 23123, 29208, 31642, 43812, 46246, 47463, 63284, 69369, 87624, 92492, 94926, 126568, 138738, 142389, 184984, 189852, 208107, 277476, 284778, 300599, 379704, 416214, 554952, 569556, 601198, 832428, 901797, 1139112, 1202396, 1664856, 1803594, 2404792, 2705391, 3607188, 5410782, 7214376, 10821564, 21643128]

約数ペア:

[(1, 21643128), (2, 10821564), (3, 7214376), (4, 5410782), (6, 3607188), (8, 2705391), (9, 2404792), (12, 1803594), (13, 1664856), (18, 1202396), (19, 1139112), (24, 901797), (26, 832428), (36, 601198), (38, 569556), (39, 554952), (52, 416214), (57, 379704), (72, 300599), (76, 284778), (78, 277476), (104, 208107), (114, 189852), (117, 184984), (152, 142389), (156, 138738), (171, 126568), (228, 94926), (234, 92492), (247, 87624), (312, 69369), (342, 63284), (456, 47463), (468, 46246), (494, 43812), (684, 31642), (741, 29208), (936, 23123), (988, 21906), (1217, 17784), (1368, 15821), (1482, 14604), (1976, 10953), (2223, 9736), (2434, 8892), (2964, 7302), (3651, 5928), (4446, 4868)]