51278913

素因数分解:

$3^4\times 7^1\times {\mathrm{90439}}^1$

素因数の和:90458

約数の個数: 20

約数和(自身を含む): 87545920

約数和(自身を除く): 36267007

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 90439, 271317, 633073, 813951, 1899219, 2441853, 5697657, 7325559, 17092971, 51278913]

約数ペア:

[(1, 51278913), (3, 17092971), (7, 7325559), (9, 5697657), (21, 2441853), (27, 1899219), (63, 813951), (81, 633073), (189, 271317), (567, 90439)]