21095865

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{347}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 42127488

約数和(自身を除く): 21031623

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 193, 315, 347, 579, 965, 1041, 1351, 1735, 1737, 2429, 2895, 3123, 4053, 5205, 6755, 7287, 8685, 12145, 12159, 15615, 20265, 21861, 36435, 60795, 66971, 109305, 200913, 334855, 468797, 602739, 1004565, 1406391, 2343985, 3013695, 4219173, 7031955, 21095865]

約数ペア:

[(1, 21095865), (3, 7031955), (5, 4219173), (7, 3013695), (9, 2343985), (15, 1406391), (21, 1004565), (35, 602739), (45, 468797), (63, 334855), (105, 200913), (193, 109305), (315, 66971), (347, 60795), (579, 36435), (965, 21861), (1041, 20265), (1351, 15615), (1735, 12159), (1737, 12145), (2429, 8685), (2895, 7287), (3123, 6755), (4053, 5205)]