20903408

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9973}}^1$

素因数の和:10112

約数の個数: 20

約数和(自身を含む): 40813608

約数和(自身を除く): 19910200

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9973, 19946, 39892, 79784, 159568, 1306463, 2612926, 5225852, 10451704, 20903408]

約数ペア:

[(1, 20903408), (2, 10451704), (4, 5225852), (8, 2612926), (16, 1306463), (131, 159568), (262, 79784), (524, 39892), (1048, 19946), (2096, 9973)]