17720990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{253157}}^1$

素因数の和:253171

約数の個数: 16

約数和(自身を含む): 36454752

約数和(自身を除く): 18733762

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 253157, 506314, 1265785, 1772099, 2531570, 3544198, 8860495, 17720990]

約数ペア:

[(1, 17720990), (2, 8860495), (5, 3544198), (7, 2531570), (10, 1772099), (14, 1265785), (35, 506314), (70, 253157)]