28361893

素因数分解:

$7^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 33035904

約数和(自身を除く): 4674011

約数列:

[1, 7, 131, 157, 197, 917, 1099, 1379, 20567, 25807, 30929, 143969, 180649, 216503, 4051699, 28361893]

約数ペア:

[(1, 28361893), (7, 4051699), (131, 216503), (157, 180649), (197, 143969), (917, 30929), (1099, 25807), (1379, 20567)]