221736281

素因数分解:

${\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 247388184

約数和(自身を除く): 25651903

約数列:

[1, 13, 61, 137, 157, 169, 793, 1781, 2041, 8357, 9577, 10309, 21509, 23153, 26533, 108641, 124501, 279617, 1312049, 1412333, 1618513, 3635021, 17056637, 221736281]

約数ペア:

[(1, 221736281), (13, 17056637), (61, 3635021), (137, 1618513), (157, 1412333), (169, 1312049), (793, 279617), (1781, 124501), (2041, 108641), (8357, 26533), (9577, 23153), (10309, 21509)]