128469879

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{1789}}^1$

素因数の和:1975

約数の個数: 24

約数和(自身を含む): 189883200

約数和(自身を除く): 61413321

約数列:

[1, 3, 9, 79, 101, 237, 303, 711, 909, 1789, 5367, 7979, 16101, 23937, 71811, 141331, 180689, 423993, 542067, 1271979, 1626201, 14274431, 42823293, 128469879]

約数ペア:

[(1, 128469879), (3, 42823293), (9, 14274431), (79, 1626201), (101, 1271979), (237, 542067), (303, 423993), (711, 180689), (909, 141331), (1789, 71811), (5367, 23937), (7979, 16101)]