21988512

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:875

約数の個数: 144

約数和(自身を含む): 77051520

約数和(自身を除く): 55063008

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 52, 56, 63, 72, 78, 84, 91, 96, 104, 112, 117, 126, 144, 156, 168, 182, 208, 224, 234, 252, 273, 288, 312, 336, 364, 416, 468, 504, 546, 624, 672, 728, 819, 839, 936, 1008, 1092, 1248, 1456, 1638, 1678, 1872, 2016, 2184, 2517, 2912, 3276, 3356, 3744, 4368, 5034, 5873, 6552, 6712, 7551, 8736, 10068, 10907, 11746, 13104, 13424, 15102, 17619, 20136, 21814, 23492, 26208, 26848, 30204, 32721, 35238, 40272, 43628, 46984, 52857, 60408, 65442, 70476, 76349, 80544, 87256, 93968, 98163, 105714, 120816, 130884, 140952, 152698, 174512, 187936, 196326, 211428, 229047, 241632, 261768, 281904, 305396, 349024, 392652, 422856, 458094, 523536, 563808, 610792, 687141, 785304, 845712, 916188, 1047072, 1221584, 1374282, 1570608, 1691424, 1832376, 2443168, 2748564, 3141216, 3664752, 5497128, 7329504, 10994256, 21988512]

約数ペア:

[(1, 21988512), (2, 10994256), (3, 7329504), (4, 5497128), (6, 3664752), (7, 3141216), (8, 2748564), (9, 2443168), (12, 1832376), (13, 1691424), (14, 1570608), (16, 1374282), (18, 1221584), (21, 1047072), (24, 916188), (26, 845712), (28, 785304), (32, 687141), (36, 610792), (39, 563808), (42, 523536), (48, 458094), (52, 422856), (56, 392652), (63, 349024), (72, 305396), (78, 281904), (84, 261768), (91, 241632), (96, 229047), (104, 211428), (112, 196326), (117, 187936), (126, 174512), (144, 152698), (156, 140952), (168, 130884), (182, 120816), (208, 105714), (224, 98163), (234, 93968), (252, 87256), (273, 80544), (288, 76349), (312, 70476), (336, 65442), (364, 60408), (416, 52857), (468, 46984), (504, 43628), (546, 40272), (624, 35238), (672, 32721), (728, 30204), (819, 26848), (839, 26208), (936, 23492), (1008, 21814), (1092, 20136), (1248, 17619), (1456, 15102), (1638, 13424), (1678, 13104), (1872, 11746), (2016, 10907), (2184, 10068), (2517, 8736), (2912, 7551), (3276, 6712), (3356, 6552), (3744, 5873), (4368, 5034)]