20972715

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{22921}}^1$

素因数の和:22990

約数の個数: 16

約数和(自身を含む): 34107936

約数和(自身を除く): 13135221

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 22921, 68763, 114605, 343815, 1398181, 4194543, 6990905, 20972715]

約数ペア:

[(1, 20972715), (3, 6990905), (5, 4194543), (15, 1398181), (61, 343815), (183, 114605), (305, 68763), (915, 22921)]