20808480

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1$

素因数の和:599

約数の個数: 192

約数和(自身を含む): 81865728

約数和(自身を除く): 61057248

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 32, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 96, 105, 110, 112, 120, 132, 140, 154, 160, 165, 168, 176, 210, 220, 224, 231, 240, 264, 280, 308, 330, 336, 352, 385, 420, 440, 462, 480, 528, 560, 563, 616, 660, 672, 770, 840, 880, 924, 1056, 1120, 1126, 1155, 1232, 1320, 1540, 1680, 1689, 1760, 1848, 2252, 2310, 2464, 2640, 2815, 3080, 3360, 3378, 3696, 3941, 4504, 4620, 5280, 5630, 6160, 6193, 6756, 7392, 7882, 8445, 9008, 9240, 11260, 11823, 12320, 12386, 13512, 15764, 16890, 18016, 18480, 18579, 19705, 22520, 23646, 24772, 27024, 30965, 31528, 33780, 36960, 37158, 39410, 43351, 45040, 47292, 49544, 54048, 59115, 61930, 63056, 67560, 74316, 78820, 86702, 90080, 92895, 94584, 99088, 118230, 123860, 126112, 130053, 135120, 148632, 157640, 173404, 185790, 189168, 198176, 216755, 236460, 247720, 260106, 270240, 297264, 315280, 346808, 371580, 378336, 433510, 472920, 495440, 520212, 594528, 630560, 650265, 693616, 743160, 867020, 945840, 990880, 1040424, 1300530, 1387232, 1486320, 1734040, 1891680, 2080848, 2601060, 2972640, 3468080, 4161696, 5202120, 6936160, 10404240, 20808480]

約数ペア:

[(1, 20808480), (2, 10404240), (3, 6936160), (4, 5202120), (5, 4161696), (6, 3468080), (7, 2972640), (8, 2601060), (10, 2080848), (11, 1891680), (12, 1734040), (14, 1486320), (15, 1387232), (16, 1300530), (20, 1040424), (21, 990880), (22, 945840), (24, 867020), (28, 743160), (30, 693616), (32, 650265), (33, 630560), (35, 594528), (40, 520212), (42, 495440), (44, 472920), (48, 433510), (55, 378336), (56, 371580), (60, 346808), (66, 315280), (70, 297264), (77, 270240), (80, 260106), (84, 247720), (88, 236460), (96, 216755), (105, 198176), (110, 189168), (112, 185790), (120, 173404), (132, 157640), (140, 148632), (154, 135120), (160, 130053), (165, 126112), (168, 123860), (176, 118230), (210, 99088), (220, 94584), (224, 92895), (231, 90080), (240, 86702), (264, 78820), (280, 74316), (308, 67560), (330, 63056), (336, 61930), (352, 59115), (385, 54048), (420, 49544), (440, 47292), (462, 45040), (480, 43351), (528, 39410), (560, 37158), (563, 36960), (616, 33780), (660, 31528), (672, 30965), (770, 27024), (840, 24772), (880, 23646), (924, 22520), (1056, 19705), (1120, 18579), (1126, 18480), (1155, 18016), (1232, 16890), (1320, 15764), (1540, 13512), (1680, 12386), (1689, 12320), (1760, 11823), (1848, 11260), (2252, 9240), (2310, 9008), (2464, 8445), (2640, 7882), (2815, 7392), (3080, 6756), (3360, 6193), (3378, 6160), (3696, 5630), (3941, 5280), (4504, 4620)]