28513779

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{22259}}^1$

素因数の和:22330

約数の個数: 16

約数和(自身を含む): 44163840

約数和(自身を除く): 15650061

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 22259, 66777, 155813, 467439, 1357799, 4073397, 9504593, 28513779]

約数ペア:

[(1, 28513779), (3, 9504593), (7, 4073397), (21, 1357799), (61, 467439), (183, 155813), (427, 66777), (1281, 22259)]