21190052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{407501}}^1$

素因数の和:407518

約数の個数: 12

約数和(自身を含む): 39935196

約数和(自身を除く): 18745144

約数列:

[1, 2, 4, 13, 26, 52, 407501, 815002, 1630004, 5297513, 10595026, 21190052]

約数ペア:

[(1, 21190052), (2, 10595026), (4, 5297513), (13, 1630004), (26, 815002), (52, 407501)]