21321730

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23957}}^1$

素因数の和:24053

約数の個数: 16

約数和(自身を含む): 38811960

約数和(自身を除く): 17490230

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23957, 47914, 119785, 239570, 2132173, 4264346, 10660865, 21321730]

約数ペア:

[(1, 21321730), (2, 10660865), (5, 4264346), (10, 2132173), (89, 239570), (178, 119785), (445, 47914), (890, 23957)]