18638753

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{397}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 22542720

約数和(自身を除く): 3903967

約数列:

[1, 7, 19, 133, 353, 397, 2471, 2779, 6707, 7543, 46949, 52801, 140141, 980987, 2662679, 18638753]

約数ペア:

[(1, 18638753), (7, 2662679), (19, 980987), (133, 140141), (353, 52801), (397, 46949), (2471, 7543), (2779, 6707)]