21490736

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12553}}^1$

素因数の和:12668

約数の個数: 20

約数和(自身を含む): 42030792

約数和(自身を除く): 20540056

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12553, 25106, 50212, 100424, 200848, 1343171, 2686342, 5372684, 10745368, 21490736]

約数ペア:

[(1, 21490736), (2, 10745368), (4, 5372684), (8, 2686342), (16, 1343171), (107, 200848), (214, 100424), (428, 50212), (856, 25106), (1712, 12553)]