20563840

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:180

約数の個数: 128

約数和(自身を含む): 56401920

約数和(自身を除く): 35838080

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, 127, 128, 160, 176, 184, 220, 230, 253, 254, 320, 352, 368, 440, 460, 506, 508, 635, 640, 704, 736, 880, 920, 1012, 1016, 1265, 1270, 1397, 1408, 1472, 1760, 1840, 2024, 2032, 2530, 2540, 2794, 2921, 2944, 3520, 3680, 4048, 4064, 5060, 5080, 5588, 5842, 6985, 7040, 7360, 8096, 8128, 10120, 10160, 11176, 11684, 13970, 14605, 14720, 16192, 16256, 20240, 20320, 22352, 23368, 27940, 29210, 32131, 32384, 40480, 40640, 44704, 46736, 55880, 58420, 64262, 80960, 81280, 89408, 93472, 111760, 116840, 128524, 160655, 161920, 178816, 186944, 223520, 233680, 257048, 321310, 373888, 447040, 467360, 514096, 642620, 894080, 934720, 1028192, 1285240, 1869440, 2056384, 2570480, 4112768, 5140960, 10281920, 20563840]

約数ペア:

[(1, 20563840), (2, 10281920), (4, 5140960), (5, 4112768), (8, 2570480), (10, 2056384), (11, 1869440), (16, 1285240), (20, 1028192), (22, 934720), (23, 894080), (32, 642620), (40, 514096), (44, 467360), (46, 447040), (55, 373888), (64, 321310), (80, 257048), (88, 233680), (92, 223520), (110, 186944), (115, 178816), (127, 161920), (128, 160655), (160, 128524), (176, 116840), (184, 111760), (220, 93472), (230, 89408), (253, 81280), (254, 80960), (320, 64262), (352, 58420), (368, 55880), (440, 46736), (460, 44704), (506, 40640), (508, 40480), (635, 32384), (640, 32131), (704, 29210), (736, 27940), (880, 23368), (920, 22352), (1012, 20320), (1016, 20240), (1265, 16256), (1270, 16192), (1397, 14720), (1408, 14605), (1472, 13970), (1760, 11684), (1840, 11176), (2024, 10160), (2032, 10120), (2530, 8128), (2540, 8096), (2794, 7360), (2921, 7040), (2944, 6985), (3520, 5842), (3680, 5588), (4048, 5080), (4064, 5060)]