19988185

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7229}}^1$

素因数の和:7320

約数の個数: 16

約数和(自身を含む): 27763200

約数和(自身を除く): 7775015

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 7229, 36145, 50603, 253015, 571091, 2855455, 3997637, 19988185]

約数ペア:

[(1, 19988185), (5, 3997637), (7, 2855455), (35, 571091), (79, 253015), (395, 50603), (553, 36145), (2765, 7229)]