21382885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4789}}^1$

素因数の和:4860

約数の個数: 16

約数和(自身を含む): 27590400

約数和(自身を除く): 6207515

約数列:

[1, 5, 19, 47, 95, 235, 893, 4465, 4789, 23945, 90991, 225083, 454955, 1125415, 4276577, 21382885]

約数ペア:

[(1, 21382885), (5, 4276577), (19, 1125415), (47, 454955), (95, 225083), (235, 90991), (893, 23945), (4465, 4789)]