20515705

素因数分解:

$5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4217}}^1$

素因数の和:4368

約数の個数: 16

約数和(自身を含む): 28344960

約数和(自身を除く): 7829255

約数列:

[1, 5, 7, 35, 139, 695, 973, 4217, 4865, 21085, 29519, 147595, 586163, 2930815, 4103141, 20515705]

約数ペア:

[(1, 20515705), (5, 4103141), (7, 2930815), (35, 586163), (139, 147595), (695, 29519), (973, 21085), (4217, 4865)]