20808101878

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1\times {\mathrm{434389}}^1$

素因数の和:434991

約数の個数: 16

約数和(自身を含む): 31995429840

約数和(自身を除く): 11187327962

約数列:

[1, 2, 43, 86, 557, 1114, 23951, 47902, 434389, 868778, 18678727, 37357454, 241954673, 483909346, 10404050939, 20808101878]

約数ペア:

[(1, 20808101878), (2, 10404050939), (43, 483909346), (86, 241954673), (557, 37357454), (1114, 18678727), (23951, 868778), (47902, 434389)]