21980752

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10487}}^1$

素因数の和:10626

約数の個数: 20

約数和(自身を含む): 42916896

約数和(自身を除く): 20936144

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10487, 20974, 41948, 83896, 167792, 1373797, 2747594, 5495188, 10990376, 21980752]

約数ペア:

[(1, 21980752), (2, 10990376), (4, 5495188), (8, 2747594), (16, 1373797), (131, 167792), (262, 83896), (524, 41948), (1048, 20974), (2096, 10487)]