21991608

素因数分解:

$2^3\times 3^3\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:198

約数の個数: 128

約数和(自身を含む): 66484800

約数和(自身を除く): 44493192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 27, 34, 36, 51, 53, 54, 68, 72, 102, 106, 108, 113, 136, 153, 159, 204, 212, 216, 226, 306, 318, 339, 408, 424, 452, 459, 477, 612, 636, 678, 901, 904, 918, 954, 1017, 1224, 1272, 1356, 1431, 1802, 1836, 1908, 1921, 2034, 2703, 2712, 2862, 3051, 3604, 3672, 3816, 3842, 4068, 5406, 5724, 5763, 5989, 6102, 7208, 7684, 8109, 8136, 10812, 11448, 11526, 11978, 12204, 15368, 16218, 17289, 17967, 21624, 23052, 23956, 24327, 24408, 32436, 34578, 35934, 46104, 47912, 48654, 51867, 53901, 64872, 69156, 71868, 97308, 101813, 103734, 107802, 138312, 143736, 161703, 194616, 203626, 207468, 215604, 305439, 323406, 407252, 414936, 431208, 610878, 646812, 814504, 916317, 1221756, 1293624, 1832634, 2443512, 2748951, 3665268, 5497902, 7330536, 10995804, 21991608]

約数ペア:

[(1, 21991608), (2, 10995804), (3, 7330536), (4, 5497902), (6, 3665268), (8, 2748951), (9, 2443512), (12, 1832634), (17, 1293624), (18, 1221756), (24, 916317), (27, 814504), (34, 646812), (36, 610878), (51, 431208), (53, 414936), (54, 407252), (68, 323406), (72, 305439), (102, 215604), (106, 207468), (108, 203626), (113, 194616), (136, 161703), (153, 143736), (159, 138312), (204, 107802), (212, 103734), (216, 101813), (226, 97308), (306, 71868), (318, 69156), (339, 64872), (408, 53901), (424, 51867), (452, 48654), (459, 47912), (477, 46104), (612, 35934), (636, 34578), (678, 32436), (901, 24408), (904, 24327), (918, 23956), (954, 23052), (1017, 21624), (1224, 17967), (1272, 17289), (1356, 16218), (1431, 15368), (1802, 12204), (1836, 11978), (1908, 11526), (1921, 11448), (2034, 10812), (2703, 8136), (2712, 8109), (2862, 7684), (3051, 7208), (3604, 6102), (3672, 5989), (3816, 5763), (3842, 5724), (4068, 5406)]