21561232

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 120

約数和(自身を含む): 55149248

約数和(自身を除く): 33588016

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 37, 43, 44, 56, 74, 77, 86, 88, 112, 121, 148, 154, 172, 176, 242, 259, 296, 301, 308, 344, 407, 473, 484, 518, 592, 602, 616, 688, 814, 847, 946, 968, 1036, 1204, 1232, 1591, 1628, 1694, 1892, 1936, 2072, 2408, 2849, 3182, 3256, 3311, 3388, 3784, 4144, 4477, 4816, 5203, 5698, 6364, 6512, 6622, 6776, 7568, 8954, 10406, 11137, 11396, 12728, 13244, 13552, 17501, 17908, 20812, 22274, 22792, 25456, 26488, 31339, 35002, 35816, 36421, 41624, 44548, 45584, 52976, 62678, 70004, 71632, 72842, 83248, 89096, 122507, 125356, 140008, 145684, 178192, 192511, 245014, 250712, 280016, 291368, 385022, 490028, 501424, 582736, 770044, 980056, 1347577, 1540088, 1960112, 2695154, 3080176, 5390308, 10780616, 21561232]

約数ペア:

[(1, 21561232), (2, 10780616), (4, 5390308), (7, 3080176), (8, 2695154), (11, 1960112), (14, 1540088), (16, 1347577), (22, 980056), (28, 770044), (37, 582736), (43, 501424), (44, 490028), (56, 385022), (74, 291368), (77, 280016), (86, 250712), (88, 245014), (112, 192511), (121, 178192), (148, 145684), (154, 140008), (172, 125356), (176, 122507), (242, 89096), (259, 83248), (296, 72842), (301, 71632), (308, 70004), (344, 62678), (407, 52976), (473, 45584), (484, 44548), (518, 41624), (592, 36421), (602, 35816), (616, 35002), (688, 31339), (814, 26488), (847, 25456), (946, 22792), (968, 22274), (1036, 20812), (1204, 17908), (1232, 17501), (1591, 13552), (1628, 13244), (1694, 12728), (1892, 11396), (1936, 11137), (2072, 10406), (2408, 8954), (2849, 7568), (3182, 6776), (3256, 6622), (3311, 6512), (3388, 6364), (3784, 5698), (4144, 5203), (4477, 4816)]