21503984

素因数分解:

$2^4\times {\mathrm{349}}^1\times {\mathrm{3851}}^1$

素因数の和:4208

約数の個数: 20

約数和(自身を含む): 41794200

約数和(自身を除く): 20290216

約数列:

[1, 2, 4, 8, 16, 349, 698, 1396, 2792, 3851, 5584, 7702, 15404, 30808, 61616, 1343999, 2687998, 5375996, 10751992, 21503984]

約数ペア:

[(1, 21503984), (2, 10751992), (4, 5375996), (8, 2687998), (16, 1343999), (349, 61616), (698, 30808), (1396, 15404), (2792, 7702), (3851, 5584)]