21697280

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 60044544

約数和(自身を除く): 38347264

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 67, 80, 88, 92, 110, 115, 128, 134, 160, 176, 184, 220, 230, 253, 256, 268, 320, 335, 352, 368, 440, 460, 506, 536, 640, 670, 704, 736, 737, 880, 920, 1012, 1072, 1265, 1280, 1340, 1408, 1472, 1474, 1541, 1760, 1840, 2024, 2144, 2530, 2680, 2816, 2944, 2948, 3082, 3520, 3680, 3685, 4048, 4288, 5060, 5360, 5888, 5896, 6164, 7040, 7360, 7370, 7705, 8096, 8576, 10120, 10720, 11792, 12328, 14080, 14720, 14740, 15410, 16192, 16951, 17152, 20240, 21440, 23584, 24656, 29440, 29480, 30820, 32384, 33902, 40480, 42880, 47168, 49312, 58960, 61640, 64768, 67804, 80960, 84755, 85760, 94336, 98624, 117920, 123280, 135608, 161920, 169510, 188672, 197248, 235840, 246560, 271216, 323840, 339020, 394496, 471680, 493120, 542432, 678040, 943360, 986240, 1084864, 1356080, 1972480, 2169728, 2712160, 4339456, 5424320, 10848640, 21697280]

約数ペア:

[(1, 21697280), (2, 10848640), (4, 5424320), (5, 4339456), (8, 2712160), (10, 2169728), (11, 1972480), (16, 1356080), (20, 1084864), (22, 986240), (23, 943360), (32, 678040), (40, 542432), (44, 493120), (46, 471680), (55, 394496), (64, 339020), (67, 323840), (80, 271216), (88, 246560), (92, 235840), (110, 197248), (115, 188672), (128, 169510), (134, 161920), (160, 135608), (176, 123280), (184, 117920), (220, 98624), (230, 94336), (253, 85760), (256, 84755), (268, 80960), (320, 67804), (335, 64768), (352, 61640), (368, 58960), (440, 49312), (460, 47168), (506, 42880), (536, 40480), (640, 33902), (670, 32384), (704, 30820), (736, 29480), (737, 29440), (880, 24656), (920, 23584), (1012, 21440), (1072, 20240), (1265, 17152), (1280, 16951), (1340, 16192), (1408, 15410), (1472, 14740), (1474, 14720), (1541, 14080), (1760, 12328), (1840, 11792), (2024, 10720), (2144, 10120), (2530, 8576), (2680, 8096), (2816, 7705), (2944, 7370), (2948, 7360), (3082, 7040), (3520, 6164), (3680, 5896), (3685, 5888), (4048, 5360), (4288, 5060)]