20101990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{118247}}^1$

素因数の和:118271

約数の個数: 16

約数和(自身を含む): 38312352

約数和(自身を除く): 18210362

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 118247, 236494, 591235, 1182470, 2010199, 4020398, 10050995, 20101990]

約数ペア:

[(1, 20101990), (2, 10050995), (5, 4020398), (10, 2010199), (17, 1182470), (34, 591235), (85, 236494), (170, 118247)]