21455265

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2341}}^1$

素因数の和:2409

約数の個数: 32

約数和(自身を含む): 37771776

約数和(自身を除く): 16316511

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2341, 3055, 7023, 9165, 11705, 30433, 35115, 91299, 110027, 152165, 330081, 456495, 550135, 1430351, 1650405, 4291053, 7151755, 21455265]

約数ペア:

[(1, 21455265), (3, 7151755), (5, 4291053), (13, 1650405), (15, 1430351), (39, 550135), (47, 456495), (65, 330081), (141, 152165), (195, 110027), (235, 91299), (611, 35115), (705, 30433), (1833, 11705), (2341, 9165), (3055, 7023)]