21321351

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{541}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 32129760

約数和(自身を除く): 10808409

約数列:

[1, 3, 9, 29, 87, 151, 261, 453, 541, 1359, 1623, 4379, 4869, 13137, 15689, 39411, 47067, 81691, 141201, 245073, 735219, 2369039, 7107117, 21321351]

約数ペア:

[(1, 21321351), (3, 7107117), (9, 2369039), (29, 735219), (87, 245073), (151, 141201), (261, 81691), (453, 47067), (541, 39411), (1359, 15689), (1623, 13137), (4379, 4869)]