21001490

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25303}}^1$

素因数の和:25393

約数の個数: 16

約数和(自身を含む): 38259648

約数和(自身を除く): 17258158

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25303, 50606, 126515, 253030, 2100149, 4200298, 10500745, 21001490]

約数ペア:

[(1, 21001490), (2, 10500745), (5, 4200298), (10, 2100149), (83, 253030), (166, 126515), (415, 50606), (830, 25303)]