18153520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1$

素因数の和:459

約数の個数: 120

約数和(自身を含む): 53688528

約数和(自身を除く): 35535008

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 421, 440, 490, 539, 560, 616, 770, 784, 842, 880, 980, 1078, 1232, 1540, 1684, 1960, 2105, 2156, 2695, 2947, 3080, 3368, 3920, 4210, 4312, 4631, 5390, 5894, 6160, 6736, 8420, 8624, 9262, 10780, 11788, 14735, 16840, 18524, 20629, 21560, 23155, 23576, 29470, 32417, 33680, 37048, 41258, 43120, 46310, 47152, 58940, 64834, 74096, 82516, 92620, 103145, 117880, 129668, 162085, 165032, 185240, 206290, 226919, 235760, 259336, 324170, 330064, 370480, 412580, 453838, 518672, 648340, 825160, 907676, 1134595, 1296680, 1650320, 1815352, 2269190, 2593360, 3630704, 4538380, 9076760, 18153520]

約数ペア:

[(1, 18153520), (2, 9076760), (4, 4538380), (5, 3630704), (7, 2593360), (8, 2269190), (10, 1815352), (11, 1650320), (14, 1296680), (16, 1134595), (20, 907676), (22, 825160), (28, 648340), (35, 518672), (40, 453838), (44, 412580), (49, 370480), (55, 330064), (56, 324170), (70, 259336), (77, 235760), (80, 226919), (88, 206290), (98, 185240), (110, 165032), (112, 162085), (140, 129668), (154, 117880), (176, 103145), (196, 92620), (220, 82516), (245, 74096), (280, 64834), (308, 58940), (385, 47152), (392, 46310), (421, 43120), (440, 41258), (490, 37048), (539, 33680), (560, 32417), (616, 29470), (770, 23576), (784, 23155), (842, 21560), (880, 20629), (980, 18524), (1078, 16840), (1232, 14735), (1540, 11788), (1684, 10780), (1960, 9262), (2105, 8624), (2156, 8420), (2695, 6736), (2947, 6160), (3080, 5894), (3368, 5390), (3920, 4631), (4210, 4312)]