21055968

素因数分解:

$2^5\times 3^2\times {\mathrm{113}}^1\times {\mathrm{647}}^1$

素因数の和:776

約数の個数: 72

約数和(自身を含む): 60501168

約数和(自身を除く): 39445200

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 113, 144, 226, 288, 339, 452, 647, 678, 904, 1017, 1294, 1356, 1808, 1941, 2034, 2588, 2712, 3616, 3882, 4068, 5176, 5424, 5823, 7764, 8136, 10352, 10848, 11646, 15528, 16272, 20704, 23292, 31056, 32544, 46584, 62112, 73111, 93168, 146222, 186336, 219333, 292444, 438666, 584888, 657999, 877332, 1169776, 1315998, 1754664, 2339552, 2631996, 3509328, 5263992, 7018656, 10527984, 21055968]

約数ペア:

[(1, 21055968), (2, 10527984), (3, 7018656), (4, 5263992), (6, 3509328), (8, 2631996), (9, 2339552), (12, 1754664), (16, 1315998), (18, 1169776), (24, 877332), (32, 657999), (36, 584888), (48, 438666), (72, 292444), (96, 219333), (113, 186336), (144, 146222), (226, 93168), (288, 73111), (339, 62112), (452, 46584), (647, 32544), (678, 31056), (904, 23292), (1017, 20704), (1294, 16272), (1356, 15528), (1808, 11646), (1941, 10848), (2034, 10352), (2588, 8136), (2712, 7764), (3616, 5823), (3882, 5424), (4068, 5176)]