81780804

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:247

約数の個数: 144

約数和(自身を含む): 248976000

約数和(自身を除く): 167195196

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 49, 63, 74, 84, 98, 111, 126, 147, 148, 179, 196, 222, 252, 259, 294, 333, 343, 358, 441, 444, 518, 537, 588, 666, 686, 716, 777, 882, 1029, 1036, 1074, 1253, 1332, 1372, 1554, 1611, 1764, 1813, 2058, 2148, 2331, 2506, 3087, 3108, 3222, 3626, 3759, 4116, 4662, 5012, 5439, 6174, 6444, 6623, 7252, 7518, 8771, 9324, 10878, 11277, 12348, 12691, 13246, 15036, 16317, 17542, 19869, 21756, 22554, 25382, 26313, 26492, 32634, 35084, 38073, 39738, 45108, 46361, 50764, 52626, 59607, 61397, 65268, 76146, 78939, 79476, 92722, 105252, 114219, 119214, 122794, 139083, 152292, 157878, 184191, 185444, 228438, 238428, 245588, 278166, 315756, 324527, 368382, 417249, 456876, 552573, 556332, 649054, 736764, 834498, 973581, 1105146, 1298108, 1668996, 1947162, 2210292, 2271689, 2920743, 3894324, 4543378, 5841486, 6815067, 9086756, 11682972, 13630134, 20445201, 27260268, 40890402, 81780804]

約数ペア:

[(1, 81780804), (2, 40890402), (3, 27260268), (4, 20445201), (6, 13630134), (7, 11682972), (9, 9086756), (12, 6815067), (14, 5841486), (18, 4543378), (21, 3894324), (28, 2920743), (36, 2271689), (37, 2210292), (42, 1947162), (49, 1668996), (63, 1298108), (74, 1105146), (84, 973581), (98, 834498), (111, 736764), (126, 649054), (147, 556332), (148, 552573), (179, 456876), (196, 417249), (222, 368382), (252, 324527), (259, 315756), (294, 278166), (333, 245588), (343, 238428), (358, 228438), (441, 185444), (444, 184191), (518, 157878), (537, 152292), (588, 139083), (666, 122794), (686, 119214), (716, 114219), (777, 105252), (882, 92722), (1029, 79476), (1036, 78939), (1074, 76146), (1253, 65268), (1332, 61397), (1372, 59607), (1554, 52626), (1611, 50764), (1764, 46361), (1813, 45108), (2058, 39738), (2148, 38073), (2331, 35084), (2506, 32634), (3087, 26492), (3108, 26313), (3222, 25382), (3626, 22554), (3759, 21756), (4116, 19869), (4662, 17542), (5012, 16317), (5439, 15036), (6174, 13246), (6444, 12691), (6623, 12348), (7252, 11277), (7518, 10878), (8771, 9324)]