81942273

素因数分解:

$3^5\times 7^1\times {\mathrm{67}}^1\times {\mathrm{719}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 142571520

約数和(自身を除く): 60629247

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 243, 469, 567, 603, 719, 1407, 1701, 1809, 2157, 4221, 5033, 5427, 6471, 12663, 15099, 16281, 19413, 37989, 45297, 48173, 58239, 113967, 135891, 144519, 174717, 337211, 407673, 433557, 1011633, 1223019, 1300671, 3034899, 3902013, 9104697, 11706039, 27314091, 81942273]

約数ペア:

[(1, 81942273), (3, 27314091), (7, 11706039), (9, 9104697), (21, 3902013), (27, 3034899), (63, 1300671), (67, 1223019), (81, 1011633), (189, 433557), (201, 407673), (243, 337211), (469, 174717), (567, 144519), (603, 135891), (719, 113967), (1407, 58239), (1701, 48173), (1809, 45297), (2157, 37989), (4221, 19413), (5033, 16281), (5427, 15099), (6471, 12663)]