21303126

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 72

約数和(自身を含む): 51386400

約数和(自身を除く): 30083274

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 47, 78, 94, 117, 141, 149, 169, 234, 282, 298, 338, 423, 447, 507, 611, 846, 894, 1014, 1222, 1341, 1521, 1833, 1937, 2682, 3042, 3666, 3874, 5499, 5811, 7003, 7943, 10998, 11622, 14006, 15886, 17433, 21009, 23829, 25181, 34866, 42018, 47658, 50362, 63027, 71487, 75543, 91039, 126054, 142974, 151086, 182078, 226629, 273117, 453258, 546234, 819351, 1183507, 1638702, 2367014, 3550521, 7101042, 10651563, 21303126]

約数ペア:

[(1, 21303126), (2, 10651563), (3, 7101042), (6, 3550521), (9, 2367014), (13, 1638702), (18, 1183507), (26, 819351), (39, 546234), (47, 453258), (78, 273117), (94, 226629), (117, 182078), (141, 151086), (149, 142974), (169, 126054), (234, 91039), (282, 75543), (298, 71487), (338, 63027), (423, 50362), (447, 47658), (507, 42018), (611, 34866), (846, 25181), (894, 23829), (1014, 21009), (1222, 17433), (1341, 15886), (1521, 14006), (1833, 11622), (1937, 10998), (2682, 7943), (3042, 7003), (3666, 5811), (3874, 5499)]