21245072

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{7951}}^1$

素因数の和:8126

約数の個数: 20

約数和(自身を含む): 41414016

約数和(自身を除く): 20168944

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 7951, 15902, 31804, 63608, 127216, 1327817, 2655634, 5311268, 10622536, 21245072]

約数ペア:

[(1, 21245072), (2, 10622536), (4, 5311268), (8, 2655634), (16, 1327817), (167, 127216), (334, 63608), (668, 31804), (1336, 15902), (2672, 7951)]