20909744

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3259}}^1$

素因数の和:3668

約数の個数: 20

約数和(自身を含む): 40626120

約数和(自身を除く): 19716376

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3259, 6416, 6518, 13036, 26072, 52144, 1306859, 2613718, 5227436, 10454872, 20909744]

約数ペア:

[(1, 20909744), (2, 10454872), (4, 5227436), (8, 2613718), (16, 1306859), (401, 52144), (802, 26072), (1604, 13036), (3208, 6518), (3259, 6416)]