20909552

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{4969}}^1$

素因数の和:5240

約数の個数: 20

約数和(自身を含む): 40674480

約数和(自身を除く): 19764928

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 4969, 9938, 19876, 39752, 79504, 1306847, 2613694, 5227388, 10454776, 20909552]

約数ペア:

[(1, 20909552), (2, 10454776), (4, 5227388), (8, 2613694), (16, 1306847), (263, 79504), (526, 39752), (1052, 19876), (2104, 9938), (4208, 4969)]