21090736

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4691}}^1$

素因数の和:4980

約数の個数: 20

約数和(自身を含む): 41017464

約数和(自身を除く): 19926728

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4691, 9382, 18764, 37528, 75056, 1318171, 2636342, 5272684, 10545368, 21090736]

約数ペア:

[(1, 21090736), (2, 10545368), (4, 5272684), (8, 2636342), (16, 1318171), (281, 75056), (562, 37528), (1124, 18764), (2248, 9382), (4496, 4691)]