21521280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1019}}^1$

素因数の和:1052

約数の個数: 128

約数和(自身を含む): 74908800

約数和(自身を除く): 53387520

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, 128, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 384, 440, 480, 528, 640, 660, 704, 880, 960, 1019, 1056, 1320, 1408, 1760, 1920, 2038, 2112, 2640, 3057, 3520, 4076, 4224, 5095, 5280, 6114, 7040, 8152, 10190, 10560, 11209, 12228, 15285, 16304, 20380, 21120, 22418, 24456, 30570, 32608, 33627, 40760, 44836, 48912, 56045, 61140, 65216, 67254, 81520, 89672, 97824, 112090, 122280, 130432, 134508, 163040, 168135, 179344, 195648, 224180, 244560, 269016, 326080, 336270, 358688, 391296, 448360, 489120, 538032, 652160, 672540, 717376, 896720, 978240, 1076064, 1345080, 1434752, 1793440, 1956480, 2152128, 2690160, 3586880, 4304256, 5380320, 7173760, 10760640, 21521280]

約数ペア:

[(1, 21521280), (2, 10760640), (3, 7173760), (4, 5380320), (5, 4304256), (6, 3586880), (8, 2690160), (10, 2152128), (11, 1956480), (12, 1793440), (15, 1434752), (16, 1345080), (20, 1076064), (22, 978240), (24, 896720), (30, 717376), (32, 672540), (33, 652160), (40, 538032), (44, 489120), (48, 448360), (55, 391296), (60, 358688), (64, 336270), (66, 326080), (80, 269016), (88, 244560), (96, 224180), (110, 195648), (120, 179344), (128, 168135), (132, 163040), (160, 134508), (165, 130432), (176, 122280), (192, 112090), (220, 97824), (240, 89672), (264, 81520), (320, 67254), (330, 65216), (352, 61140), (384, 56045), (440, 48912), (480, 44836), (528, 40760), (640, 33627), (660, 32608), (704, 30570), (880, 24456), (960, 22418), (1019, 21120), (1056, 20380), (1320, 16304), (1408, 15285), (1760, 12228), (1920, 11209), (2038, 10560), (2112, 10190), (2640, 8152), (3057, 7040), (3520, 6114), (4076, 5280), (4224, 5095)]