19779305

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1499}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 10460695

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1499, 1885, 2639, 7495, 10493, 13195, 19487, 43471, 52465, 97435, 136409, 217355, 304297, 565123, 682045, 1521485, 2825615, 3955861, 19779305]

約数ペア:

[(1, 19779305), (5, 3955861), (7, 2825615), (13, 1521485), (29, 682045), (35, 565123), (65, 304297), (91, 217355), (145, 136409), (203, 97435), (377, 52465), (455, 43471), (1015, 19487), (1499, 13195), (1885, 10493), (2639, 7495)]