21381408

素因数分解:

$2^5\times 3^4\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 120

約数和(自身を含む): 64307628

約数和(自身を除く): 42926220

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 73, 81, 96, 108, 113, 144, 146, 162, 216, 219, 226, 288, 292, 324, 339, 432, 438, 452, 584, 648, 657, 678, 864, 876, 904, 1017, 1168, 1296, 1314, 1356, 1752, 1808, 1971, 2034, 2336, 2592, 2628, 2712, 3051, 3504, 3616, 3942, 4068, 5256, 5424, 5913, 6102, 7008, 7884, 8136, 8249, 9153, 10512, 10848, 11826, 12204, 15768, 16272, 16498, 18306, 21024, 23652, 24408, 24747, 31536, 32544, 32996, 36612, 47304, 48816, 49494, 63072, 65992, 73224, 74241, 94608, 97632, 98988, 131984, 146448, 148482, 189216, 197976, 222723, 263968, 292896, 296964, 395952, 445446, 593928, 668169, 791904, 890892, 1187856, 1336338, 1781784, 2375712, 2672676, 3563568, 5345352, 7127136, 10690704, 21381408]

約数ペア:

[(1, 21381408), (2, 10690704), (3, 7127136), (4, 5345352), (6, 3563568), (8, 2672676), (9, 2375712), (12, 1781784), (16, 1336338), (18, 1187856), (24, 890892), (27, 791904), (32, 668169), (36, 593928), (48, 445446), (54, 395952), (72, 296964), (73, 292896), (81, 263968), (96, 222723), (108, 197976), (113, 189216), (144, 148482), (146, 146448), (162, 131984), (216, 98988), (219, 97632), (226, 94608), (288, 74241), (292, 73224), (324, 65992), (339, 63072), (432, 49494), (438, 48816), (452, 47304), (584, 36612), (648, 32996), (657, 32544), (678, 31536), (864, 24747), (876, 24408), (904, 23652), (1017, 21024), (1168, 18306), (1296, 16498), (1314, 16272), (1356, 15768), (1752, 12204), (1808, 11826), (1971, 10848), (2034, 10512), (2336, 9153), (2592, 8249), (2628, 8136), (2712, 7884), (3051, 7008), (3504, 6102), (3616, 5913), (3942, 5424), (4068, 5256)]