21288289

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{383}}^1$

素因数の和:588

約数の個数: 16

約数和(自身を含む): 24182784

約数和(自身を除く): 2894495

約数列:

[1, 11, 31, 163, 341, 383, 1793, 4213, 5053, 11873, 55583, 62429, 130603, 686719, 1935299, 21288289]

約数ペア:

[(1, 21288289), (11, 1935299), (31, 686719), (163, 130603), (341, 62429), (383, 55583), (1793, 11873), (4213, 5053)]