81000304

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 120

約数和(自身を含む): 203181440

約数和(自身を除く): 122181136

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 43, 44, 56, 77, 86, 88, 112, 121, 139, 154, 172, 176, 242, 278, 301, 308, 344, 473, 484, 556, 602, 616, 688, 847, 946, 968, 973, 1112, 1204, 1232, 1529, 1694, 1892, 1936, 1946, 2224, 2408, 3058, 3311, 3388, 3784, 3892, 4816, 5203, 5977, 6116, 6622, 6776, 7568, 7784, 10406, 10703, 11954, 12232, 13244, 13552, 15568, 16819, 20812, 21406, 23908, 24464, 26488, 33638, 36421, 41624, 41839, 42812, 47816, 52976, 65747, 67276, 72842, 83248, 83678, 85624, 95632, 117733, 131494, 134552, 145684, 167356, 171248, 235466, 262988, 269104, 291368, 334712, 460229, 470932, 525976, 582736, 669424, 723217, 920458, 941864, 1051952, 1446434, 1840916, 1883728, 2892868, 3681832, 5062519, 5785736, 7363664, 10125038, 11571472, 20250076, 40500152, 81000304]

約数ペア:

[(1, 81000304), (2, 40500152), (4, 20250076), (7, 11571472), (8, 10125038), (11, 7363664), (14, 5785736), (16, 5062519), (22, 3681832), (28, 2892868), (43, 1883728), (44, 1840916), (56, 1446434), (77, 1051952), (86, 941864), (88, 920458), (112, 723217), (121, 669424), (139, 582736), (154, 525976), (172, 470932), (176, 460229), (242, 334712), (278, 291368), (301, 269104), (308, 262988), (344, 235466), (473, 171248), (484, 167356), (556, 145684), (602, 134552), (616, 131494), (688, 117733), (847, 95632), (946, 85624), (968, 83678), (973, 83248), (1112, 72842), (1204, 67276), (1232, 65747), (1529, 52976), (1694, 47816), (1892, 42812), (1936, 41839), (1946, 41624), (2224, 36421), (2408, 33638), (3058, 26488), (3311, 24464), (3388, 23908), (3784, 21406), (3892, 20812), (4816, 16819), (5203, 15568), (5977, 13552), (6116, 13244), (6622, 12232), (6776, 11954), (7568, 10703), (7784, 10406)]