19420765

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{42683}}^1$

素因数の和:42708

約数の個数: 16

約数和(自身を含む): 28683648

約数和(自身を除く): 9262883

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 42683, 213415, 298781, 554879, 1493905, 2774395, 3884153, 19420765]

約数ペア:

[(1, 19420765), (5, 3884153), (7, 2774395), (13, 1493905), (35, 554879), (65, 298781), (91, 213415), (455, 42683)]