21311872

素因数分解:

$2^7\times {\mathrm{167}}^1\times {\mathrm{997}}^1$

素因数の和:1178

約数の個数: 32

約数和(自身を含む): 42754320

約数和(自身を除く): 21442448

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 167, 334, 668, 997, 1336, 1994, 2672, 3988, 5344, 7976, 10688, 15952, 21376, 31904, 63808, 127616, 166499, 332998, 665996, 1331992, 2663984, 5327968, 10655936, 21311872]

約数ペア:

[(1, 21311872), (2, 10655936), (4, 5327968), (8, 2663984), (16, 1331992), (32, 665996), (64, 332998), (128, 166499), (167, 127616), (334, 63808), (668, 31904), (997, 21376), (1336, 15952), (1994, 10688), (2672, 7976), (3988, 5344)]