28130004

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 120

約数和(自身を含む): 85648640

約数和(自身を除く): 57518636

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 79, 81, 84, 108, 126, 157, 158, 162, 189, 237, 252, 314, 316, 324, 378, 471, 474, 553, 567, 628, 711, 756, 942, 948, 1099, 1106, 1134, 1413, 1422, 1659, 1884, 2133, 2198, 2212, 2268, 2826, 2844, 3297, 3318, 4239, 4266, 4396, 4977, 5652, 6399, 6594, 6636, 8478, 8532, 9891, 9954, 12403, 12717, 12798, 13188, 14931, 16956, 19782, 19908, 24806, 25434, 25596, 29673, 29862, 37209, 39564, 44793, 49612, 50868, 59346, 59724, 74418, 86821, 89019, 89586, 111627, 118692, 148836, 173642, 178038, 179172, 223254, 260463, 334881, 347284, 356076, 446508, 520926, 669762, 781389, 1004643, 1041852, 1339524, 1562778, 2009286, 2344167, 3125556, 4018572, 4688334, 7032501, 9376668, 14065002, 28130004]

約数ペア:

[(1, 28130004), (2, 14065002), (3, 9376668), (4, 7032501), (6, 4688334), (7, 4018572), (9, 3125556), (12, 2344167), (14, 2009286), (18, 1562778), (21, 1339524), (27, 1041852), (28, 1004643), (36, 781389), (42, 669762), (54, 520926), (63, 446508), (79, 356076), (81, 347284), (84, 334881), (108, 260463), (126, 223254), (157, 179172), (158, 178038), (162, 173642), (189, 148836), (237, 118692), (252, 111627), (314, 89586), (316, 89019), (324, 86821), (378, 74418), (471, 59724), (474, 59346), (553, 50868), (567, 49612), (628, 44793), (711, 39564), (756, 37209), (942, 29862), (948, 29673), (1099, 25596), (1106, 25434), (1134, 24806), (1413, 19908), (1422, 19782), (1659, 16956), (1884, 14931), (2133, 13188), (2198, 12798), (2212, 12717), (2268, 12403), (2826, 9954), (2844, 9891), (3297, 8532), (3318, 8478), (4239, 6636), (4266, 6594), (4396, 6399), (4977, 5652)]