21913135

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{2141}}^1$

素因数の和:2258

約数の個数: 16

約数和(自身を含む): 27760320

約数和(自身を除く): 5847185

約数列:

[1, 5, 23, 89, 115, 445, 2047, 2141, 10235, 10705, 49243, 190549, 246215, 952745, 4382627, 21913135]

約数ペア:

[(1, 21913135), (5, 4382627), (23, 952745), (89, 246215), (115, 190549), (445, 49243), (2047, 10705), (2141, 10235)]