2820987

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 4892160

約数和(自身を除く): 2071173

約数列:

[1, 3, 9, 13, 19, 27, 39, 47, 57, 81, 117, 141, 171, 243, 247, 351, 423, 513, 611, 741, 893, 1053, 1269, 1539, 1833, 2223, 2679, 3159, 3807, 4617, 5499, 6669, 8037, 11421, 11609, 16497, 20007, 24111, 34827, 49491, 60021, 72333, 104481, 148473, 216999, 313443, 940329, 2820987]

約数ペア:

[(1, 2820987), (3, 940329), (9, 313443), (13, 216999), (19, 148473), (27, 104481), (39, 72333), (47, 60021), (57, 49491), (81, 34827), (117, 24111), (141, 20007), (171, 16497), (243, 11609), (247, 11421), (351, 8037), (423, 6669), (513, 5499), (611, 4617), (741, 3807), (893, 3159), (1053, 2679), (1269, 2223), (1539, 1833)]