20791323

素因数分解:

$3^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{719}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16948197

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 243, 357, 459, 567, 719, 1071, 1377, 1701, 2157, 3213, 4131, 5033, 6471, 9639, 12223, 15099, 19413, 28917, 36669, 45297, 58239, 85561, 110007, 135891, 174717, 256683, 330021, 407673, 770049, 990063, 1223019, 2310147, 2970189, 6930441, 20791323]

約数ペア:

[(1, 20791323), (3, 6930441), (7, 2970189), (9, 2310147), (17, 1223019), (21, 990063), (27, 770049), (51, 407673), (63, 330021), (81, 256683), (119, 174717), (153, 135891), (189, 110007), (243, 85561), (357, 58239), (459, 45297), (567, 36669), (719, 28917), (1071, 19413), (1377, 15099), (1701, 12223), (2157, 9639), (3213, 6471), (4131, 5033)]