21912345

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5351}}^1$

素因数の和:5382

約数の個数: 48

約数和(自身を含む): 46755072

約数和(自身を除く): 24842727

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5351, 16053, 26755, 37457, 48159, 69563, 80265, 112371, 187285, 208689, 240795, 337113, 347815, 486941, 561855, 626067, 1043445, 1460823, 1685565, 2434705, 3130335, 4382469, 7304115, 21912345]

約数ペア:

[(1, 21912345), (3, 7304115), (5, 4382469), (7, 3130335), (9, 2434705), (13, 1685565), (15, 1460823), (21, 1043445), (35, 626067), (39, 561855), (45, 486941), (63, 347815), (65, 337113), (91, 240795), (105, 208689), (117, 187285), (195, 112371), (273, 80265), (315, 69563), (455, 48159), (585, 37457), (819, 26755), (1365, 16053), (4095, 5351)]