19881039

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{3947}}^1$

素因数の和:4046

約数の個数: 16

約数和(自身を含む): 28046592

約数和(自身を除く): 8165553

約数列:

[1, 3, 23, 69, 73, 219, 1679, 3947, 5037, 11841, 90781, 272343, 288131, 864393, 6627013, 19881039]

約数ペア:

[(1, 19881039), (3, 6627013), (23, 864393), (69, 288131), (73, 272343), (219, 90781), (1679, 11841), (3947, 5037)]