21101655

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 35031744

約数和(自身を除く): 13930089

約数列:

[1, 3, 5, 15, 37, 111, 185, 193, 197, 555, 579, 591, 965, 985, 2895, 2955, 7141, 7289, 21423, 21867, 35705, 36445, 38021, 107115, 109335, 114063, 190105, 570315, 1406777, 4220331, 7033885, 21101655]

約数ペア:

[(1, 21101655), (3, 7033885), (5, 4220331), (15, 1406777), (37, 570315), (111, 190105), (185, 114063), (193, 109335), (197, 107115), (555, 38021), (579, 36445), (591, 35705), (965, 21867), (985, 21423), (2895, 7289), (2955, 7141)]