21215360

素因数分解:

$2^7\times 5^1\times {\mathrm{33149}}^1$

素因数の和:33168

約数の個数: 32

約数和(自身を含む): 50719500

約数和(自身を除く): 29504140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33149, 66298, 132596, 165745, 265192, 331490, 530384, 662980, 1060768, 1325960, 2121536, 2651920, 4243072, 5303840, 10607680, 21215360]

約数ペア:

[(1, 21215360), (2, 10607680), (4, 5303840), (5, 4243072), (8, 2651920), (10, 2121536), (16, 1325960), (20, 1060768), (32, 662980), (40, 530384), (64, 331490), (80, 265192), (128, 165745), (160, 132596), (320, 66298), (640, 33149)]