21747172

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{5399}}^1$

素因数の和:5475

約数の個数: 24

約数和(自身を含む): 40824000

約数和(自身を除く): 19076828

約数列:

[1, 2, 4, 19, 38, 53, 76, 106, 212, 1007, 2014, 4028, 5399, 10798, 21596, 102581, 205162, 286147, 410324, 572294, 1144588, 5436793, 10873586, 21747172]

約数ペア:

[(1, 21747172), (2, 10873586), (4, 5436793), (19, 1144588), (38, 572294), (53, 410324), (76, 286147), (106, 205162), (212, 102581), (1007, 21596), (2014, 10798), (4028, 5399)]