20725760

素因数分解:

$2^{14}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1$

素因数の和:67

約数の個数: 120

約数和(自身を含む): 56621376

約数和(自身を除く): 35895616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 128, 160, 176, 184, 220, 230, 253, 256, 320, 352, 368, 440, 460, 506, 512, 640, 704, 736, 880, 920, 1012, 1024, 1265, 1280, 1408, 1472, 1760, 1840, 2024, 2048, 2530, 2560, 2816, 2944, 3520, 3680, 4048, 4096, 5060, 5120, 5632, 5888, 7040, 7360, 8096, 8192, 10120, 10240, 11264, 11776, 14080, 14720, 16192, 16384, 20240, 20480, 22528, 23552, 28160, 29440, 32384, 40480, 40960, 45056, 47104, 56320, 58880, 64768, 80960, 81920, 90112, 94208, 112640, 117760, 129536, 161920, 180224, 188416, 225280, 235520, 259072, 323840, 376832, 450560, 471040, 518144, 647680, 901120, 942080, 1036288, 1295360, 1884160, 2072576, 2590720, 4145152, 5181440, 10362880, 20725760]

約数ペア:

[(1, 20725760), (2, 10362880), (4, 5181440), (5, 4145152), (8, 2590720), (10, 2072576), (11, 1884160), (16, 1295360), (20, 1036288), (22, 942080), (23, 901120), (32, 647680), (40, 518144), (44, 471040), (46, 450560), (55, 376832), (64, 323840), (80, 259072), (88, 235520), (92, 225280), (110, 188416), (115, 180224), (128, 161920), (160, 129536), (176, 117760), (184, 112640), (220, 94208), (230, 90112), (253, 81920), (256, 80960), (320, 64768), (352, 58880), (368, 56320), (440, 47104), (460, 45056), (506, 40960), (512, 40480), (640, 32384), (704, 29440), (736, 28160), (880, 23552), (920, 22528), (1012, 20480), (1024, 20240), (1265, 16384), (1280, 16192), (1408, 14720), (1472, 14080), (1760, 11776), (1840, 11264), (2024, 10240), (2048, 10120), (2530, 8192), (2560, 8096), (2816, 7360), (2944, 7040), (3520, 5888), (3680, 5632), (4048, 5120), (4096, 5060)]