28900431

素因数分解:

$3^2\times 7^1\times {\mathrm{631}}^1\times {\mathrm{727}}^1$

素因数の和:1371

約数の個数: 24

約数和(自身を含む): 47849984

約数和(自身を除く): 18949553

約数列:

[1, 3, 7, 9, 21, 63, 631, 727, 1893, 2181, 4417, 5089, 5679, 6543, 13251, 15267, 39753, 45801, 458737, 1376211, 3211159, 4128633, 9633477, 28900431]

約数ペア:

[(1, 28900431), (3, 9633477), (7, 4128633), (9, 3211159), (21, 1376211), (63, 458737), (631, 45801), (727, 39753), (1893, 15267), (2181, 13251), (4417, 6543), (5089, 5679)]