21912933

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7507}}^1$

素因数の和:7656

約数の個数: 16

約数和(自身を含む): 33635840

約数和(自身を除く): 11722907

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7507, 22521, 52549, 157647, 1043473, 3130419, 7304311, 21912933]

約数ペア:

[(1, 21912933), (3, 7304311), (7, 3130419), (21, 1043473), (139, 157647), (417, 52549), (973, 22521), (2919, 7507)]