397755267

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{2309}}^1$

素因数の和:2963

約数の個数: 32

約数和(自身を含む): 654044160

約数和(自身を除く): 256288893

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 631, 1893, 2309, 4417, 6927, 8203, 13251, 16163, 24609, 30017, 48489, 57421, 90051, 172263, 210119, 630357, 1456979, 4370937, 10198853, 18940727, 30596559, 56822181, 132585089, 397755267]

約数ペア:

[(1, 397755267), (3, 132585089), (7, 56822181), (13, 30596559), (21, 18940727), (39, 10198853), (91, 4370937), (273, 1456979), (631, 630357), (1893, 210119), (2309, 172263), (4417, 90051), (6927, 57421), (8203, 48489), (13251, 30017), (16163, 24609)]