20915751

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{4421}}^1$

素因数の和:4526

約数の個数: 16

約数和(自身を含む): 29715840

約数和(自身を除く): 8800089

約数列:

[1, 3, 19, 57, 83, 249, 1577, 4421, 4731, 13263, 83999, 251997, 366943, 1100829, 6971917, 20915751]

約数ペア:

[(1, 20915751), (3, 6971917), (19, 1100829), (57, 366943), (83, 251997), (249, 83999), (1577, 13263), (4421, 4731)]