21130155

素因数分解:

$3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{941}}^1$

素因数の和:1451

約数の個数: 24

約数和(自身を含む): 36738000

約数和(自身を除く): 15607845

約数列:

[1, 3, 5, 9, 15, 45, 499, 941, 1497, 2495, 2823, 4491, 4705, 7485, 8469, 14115, 22455, 42345, 469559, 1408677, 2347795, 4226031, 7043385, 21130155]

約数ペア:

[(1, 21130155), (3, 7043385), (5, 4226031), (9, 2347795), (15, 1408677), (45, 469559), (499, 42345), (941, 22455), (1497, 14115), (2495, 8469), (2823, 7485), (4491, 4705)]