21247696

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2609}}^1$

素因数の和:3126

約数の個数: 20

約数和(自身を含む): 41264100

約数和(自身を除く): 20016404

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2609, 4072, 5218, 8144, 10436, 20872, 41744, 1327981, 2655962, 5311924, 10623848, 21247696]

約数ペア:

[(1, 21247696), (2, 10623848), (4, 5311924), (8, 2655962), (16, 1327981), (509, 41744), (1018, 20872), (2036, 10436), (2609, 8144), (4072, 5218)]