20639792

素因数分解:

$2^4\times {\mathrm{181}}^1\times {\mathrm{7127}}^1$

素因数の和:7316

約数の個数: 20

約数和(自身を含む): 40216176

約数和(自身を除く): 19576384

約数列:

[1, 2, 4, 8, 16, 181, 362, 724, 1448, 2896, 7127, 14254, 28508, 57016, 114032, 1289987, 2579974, 5159948, 10319896, 20639792]

約数ペア:

[(1, 20639792), (2, 10319896), (4, 5159948), (8, 2579974), (16, 1289987), (181, 114032), (362, 57016), (724, 28508), (1448, 14254), (2896, 7127)]