21023554

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{523}}^1$

素因数の和:825

約数の個数: 16

約数和(自身を含む): 32068800

約数和(自身を除く): 11045246

約数列:

[1, 2, 101, 199, 202, 398, 523, 1046, 20099, 40198, 52823, 104077, 105646, 208154, 10511777, 21023554]

約数ペア:

[(1, 21023554), (2, 10511777), (101, 208154), (199, 105646), (202, 104077), (398, 52823), (523, 40198), (1046, 20099)]