21130552

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71387}}^1$

素因数の和:71430

約数の個数: 16

約数和(自身を含む): 40691160

約数和(自身を除く): 19560608

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 71387, 142774, 285548, 571096, 2641319, 5282638, 10565276, 21130552]

約数ペア:

[(1, 21130552), (2, 10565276), (4, 5282638), (8, 2641319), (37, 571096), (74, 285548), (148, 142774), (296, 71387)]