21457920

素因数分解:

$2^{10}\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1$

素因数の和:166

約数の個数: 176

約数和(自身を含む): 75460608

約数和(自身を除く): 54002688

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 127, 128, 132, 160, 165, 176, 192, 220, 240, 254, 256, 264, 320, 330, 352, 381, 384, 440, 480, 508, 512, 528, 635, 640, 660, 704, 762, 768, 880, 960, 1016, 1024, 1056, 1270, 1280, 1320, 1397, 1408, 1524, 1536, 1760, 1905, 1920, 2032, 2112, 2540, 2560, 2640, 2794, 2816, 3048, 3072, 3520, 3810, 3840, 4064, 4191, 4224, 5080, 5120, 5280, 5588, 5632, 6096, 6985, 7040, 7620, 7680, 8128, 8382, 8448, 10160, 10560, 11176, 11264, 12192, 13970, 14080, 15240, 15360, 16256, 16764, 16896, 20320, 20955, 21120, 22352, 24384, 27940, 28160, 30480, 32512, 33528, 33792, 40640, 41910, 42240, 44704, 48768, 55880, 56320, 60960, 65024, 67056, 81280, 83820, 84480, 89408, 97536, 111760, 121920, 130048, 134112, 162560, 167640, 168960, 178816, 195072, 223520, 243840, 268224, 325120, 335280, 357632, 390144, 447040, 487680, 536448, 650240, 670560, 715264, 894080, 975360, 1072896, 1341120, 1430528, 1788160, 1950720, 2145792, 2682240, 3576320, 4291584, 5364480, 7152640, 10728960, 21457920]

約数ペア:

[(1, 21457920), (2, 10728960), (3, 7152640), (4, 5364480), (5, 4291584), (6, 3576320), (8, 2682240), (10, 2145792), (11, 1950720), (12, 1788160), (15, 1430528), (16, 1341120), (20, 1072896), (22, 975360), (24, 894080), (30, 715264), (32, 670560), (33, 650240), (40, 536448), (44, 487680), (48, 447040), (55, 390144), (60, 357632), (64, 335280), (66, 325120), (80, 268224), (88, 243840), (96, 223520), (110, 195072), (120, 178816), (127, 168960), (128, 167640), (132, 162560), (160, 134112), (165, 130048), (176, 121920), (192, 111760), (220, 97536), (240, 89408), (254, 84480), (256, 83820), (264, 81280), (320, 67056), (330, 65024), (352, 60960), (381, 56320), (384, 55880), (440, 48768), (480, 44704), (508, 42240), (512, 41910), (528, 40640), (635, 33792), (640, 33528), (660, 32512), (704, 30480), (762, 28160), (768, 27940), (880, 24384), (960, 22352), (1016, 21120), (1024, 20955), (1056, 20320), (1270, 16896), (1280, 16764), (1320, 16256), (1397, 15360), (1408, 15240), (1524, 14080), (1536, 13970), (1760, 12192), (1905, 11264), (1920, 11176), (2032, 10560), (2112, 10160), (2540, 8448), (2560, 8382), (2640, 8128), (2794, 7680), (2816, 7620), (3048, 7040), (3072, 6985), (3520, 6096), (3810, 5632), (3840, 5588), (4064, 5280), (4191, 5120), (4224, 5080)]