28130151

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{19993}}^1$

素因数の和:20070

約数の個数: 16

約数和(自身を含む): 43506944

約数和(自身を除く): 15376793

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 19993, 59979, 139951, 419853, 1339531, 4018593, 9376717, 28130151]

約数ペア:

[(1, 28130151), (3, 9376717), (7, 4018593), (21, 1339531), (67, 419853), (201, 139951), (469, 59979), (1407, 19993)]