21854553

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7487}}^1$

素因数の和:7636

約数の個数: 16

約数和(自身を含む): 33546240

約数和(自身を除く): 11691687

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7487, 22461, 52409, 157227, 1040693, 3122079, 7284851, 21854553]

約数ペア:

[(1, 21854553), (3, 7284851), (7, 3122079), (21, 1040693), (139, 157227), (417, 52409), (973, 22461), (2919, 7487)]