21741265

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{673}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 32610816

約数和(自身を除く): 10869551

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 673, 923, 2485, 3365, 4615, 4711, 6461, 8749, 23555, 32305, 43745, 47783, 61243, 238915, 306215, 334481, 621179, 1672405, 3105895, 4348253, 21741265]

約数ペア:

[(1, 21741265), (5, 4348253), (7, 3105895), (13, 1672405), (35, 621179), (65, 334481), (71, 306215), (91, 238915), (355, 61243), (455, 47783), (497, 43745), (673, 32305), (923, 23555), (2485, 8749), (3365, 6461), (4615, 4711)]