280006818

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:360

約数の個数: 128

約数和(自身を含む): 724598784

約数和(自身を除く): 444591966

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 31, 39, 42, 62, 71, 78, 91, 93, 142, 182, 186, 213, 217, 233, 273, 403, 426, 434, 466, 497, 546, 651, 699, 806, 923, 994, 1209, 1302, 1398, 1491, 1631, 1846, 2201, 2418, 2769, 2821, 2982, 3029, 3262, 4402, 4893, 5538, 5642, 6058, 6461, 6603, 7223, 8463, 9087, 9786, 12922, 13206, 14446, 15407, 16543, 16926, 18174, 19383, 21203, 21669, 28613, 30814, 33086, 38766, 42406, 43338, 46221, 49629, 50561, 57226, 63609, 85839, 92442, 93899, 99258, 101122, 115801, 127218, 151683, 171678, 187798, 200291, 215059, 231602, 281697, 303366, 347403, 400582, 430118, 512833, 563394, 600873, 645177, 657293, 694806, 1025666, 1201746, 1290354, 1314586, 1505413, 1538499, 1971879, 3010826, 3076998, 3589831, 3943758, 4516239, 6666829, 7179662, 9032478, 10769493, 13333658, 20000487, 21538986, 40000974, 46667803, 93335606, 140003409, 280006818]

約数ペア:

[(1, 280006818), (2, 140003409), (3, 93335606), (6, 46667803), (7, 40000974), (13, 21538986), (14, 20000487), (21, 13333658), (26, 10769493), (31, 9032478), (39, 7179662), (42, 6666829), (62, 4516239), (71, 3943758), (78, 3589831), (91, 3076998), (93, 3010826), (142, 1971879), (182, 1538499), (186, 1505413), (213, 1314586), (217, 1290354), (233, 1201746), (273, 1025666), (403, 694806), (426, 657293), (434, 645177), (466, 600873), (497, 563394), (546, 512833), (651, 430118), (699, 400582), (806, 347403), (923, 303366), (994, 281697), (1209, 231602), (1302, 215059), (1398, 200291), (1491, 187798), (1631, 171678), (1846, 151683), (2201, 127218), (2418, 115801), (2769, 101122), (2821, 99258), (2982, 93899), (3029, 92442), (3262, 85839), (4402, 63609), (4893, 57226), (5538, 50561), (5642, 49629), (6058, 46221), (6461, 43338), (6603, 42406), (7223, 38766), (8463, 33086), (9087, 30814), (9786, 28613), (12922, 21669), (13206, 21203), (14446, 19383), (15407, 18174), (16543, 16926)]