20400752

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9173}}^1$

素因数の和:9320

約数の個数: 20

約数和(自身を含む): 39815160

約数和(自身を除く): 19414408

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9173, 18346, 36692, 73384, 146768, 1275047, 2550094, 5100188, 10200376, 20400752]

約数ペア:

[(1, 20400752), (2, 10200376), (4, 5100188), (8, 2550094), (16, 1275047), (139, 146768), (278, 73384), (556, 36692), (1112, 18346), (2224, 9173)]