19910553

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{509}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 10934247

約数列:

[1, 3, 13, 17, 39, 51, 59, 177, 221, 509, 663, 767, 1003, 1527, 2301, 3009, 6617, 8653, 13039, 19851, 25959, 30031, 39117, 90093, 112489, 337467, 390403, 510527, 1171209, 1531581, 6636851, 19910553]

約数ペア:

[(1, 19910553), (3, 6636851), (13, 1531581), (17, 1171209), (39, 510527), (51, 390403), (59, 337467), (177, 112489), (221, 90093), (509, 39117), (663, 30031), (767, 25959), (1003, 19851), (1527, 13039), (2301, 8653), (3009, 6617)]