251980729

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1811}}^1$

素因数の和:1981

約数の個数: 32

約数和(自身を含む): 340945920

約数和(自身を除く): 88965191

約数列:

[1, 7, 11, 13, 77, 91, 139, 143, 973, 1001, 1529, 1807, 1811, 10703, 12649, 12677, 19877, 19921, 23543, 139139, 139447, 164801, 251729, 258973, 1762103, 1812811, 2769019, 3272477, 19383133, 22907339, 35997247, 251980729]

約数ペア:

[(1, 251980729), (7, 35997247), (11, 22907339), (13, 19383133), (77, 3272477), (91, 2769019), (139, 1812811), (143, 1762103), (973, 258973), (1001, 251729), (1529, 164801), (1807, 139447), (1811, 139139), (10703, 23543), (12649, 19921), (12677, 19877)]