28778841

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:112

約数の個数: 96

約数和(自身を含む): 56920320

約数和(自身を除く): 28141479

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 51, 53, 63, 91, 117, 119, 153, 159, 169, 189, 221, 273, 351, 357, 371, 459, 477, 507, 663, 689, 819, 901, 1071, 1113, 1183, 1431, 1521, 1547, 1989, 2067, 2457, 2703, 2873, 3213, 3339, 3549, 4563, 4641, 4823, 5967, 6201, 6307, 8109, 8619, 8957, 10017, 10647, 11713, 13923, 14469, 18603, 18921, 20111, 24327, 25857, 26871, 31941, 35139, 41769, 43407, 56763, 60333, 62699, 77571, 80613, 81991, 105417, 130221, 152269, 170289, 180999, 188097, 241839, 245973, 316251, 456807, 542997, 564291, 737919, 1065883, 1370421, 1692873, 2213757, 3197649, 4111263, 9592947, 28778841]

約数ペア:

[(1, 28778841), (3, 9592947), (7, 4111263), (9, 3197649), (13, 2213757), (17, 1692873), (21, 1370421), (27, 1065883), (39, 737919), (51, 564291), (53, 542997), (63, 456807), (91, 316251), (117, 245973), (119, 241839), (153, 188097), (159, 180999), (169, 170289), (189, 152269), (221, 130221), (273, 105417), (351, 81991), (357, 80613), (371, 77571), (459, 62699), (477, 60333), (507, 56763), (663, 43407), (689, 41769), (819, 35139), (901, 31941), (1071, 26871), (1113, 25857), (1183, 24327), (1431, 20111), (1521, 18921), (1547, 18603), (1989, 14469), (2067, 13923), (2457, 11713), (2703, 10647), (2873, 10017), (3213, 8957), (3339, 8619), (3549, 8109), (4563, 6307), (4641, 6201), (4823, 5967)]