721095284

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{1571}}^1$

素因数の和:1705

約数の個数: 72

約数和(自身を含む): 1578765888

約数和(自身を除く): 857670604

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 97, 169, 182, 194, 338, 364, 388, 676, 679, 1183, 1261, 1358, 1571, 2366, 2522, 2716, 3142, 4732, 5044, 6284, 8827, 10997, 16393, 17654, 20423, 21994, 32786, 35308, 40846, 43988, 65572, 81692, 114751, 142961, 152387, 229502, 265499, 285922, 304774, 459004, 530998, 571844, 609548, 1061996, 1066709, 1858493, 1981031, 2133418, 3716986, 3962062, 4266836, 7433972, 7924124, 13867217, 25753403, 27734434, 51506806, 55468868, 103013612, 180273821, 360547642, 721095284]

約数ペア:

[(1, 721095284), (2, 360547642), (4, 180273821), (7, 103013612), (13, 55468868), (14, 51506806), (26, 27734434), (28, 25753403), (52, 13867217), (91, 7924124), (97, 7433972), (169, 4266836), (182, 3962062), (194, 3716986), (338, 2133418), (364, 1981031), (388, 1858493), (676, 1066709), (679, 1061996), (1183, 609548), (1261, 571844), (1358, 530998), (1571, 459004), (2366, 304774), (2522, 285922), (2716, 265499), (3142, 229502), (4732, 152387), (5044, 142961), (6284, 114751), (8827, 81692), (10997, 65572), (16393, 43988), (17654, 40846), (20423, 35308), (21994, 32786)]