521002420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{72161}}^1$

素因数の和:72208

約数の個数: 36

約数和(自身を含む): 1154736324

約数和(自身を除く): 633733904

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 72161, 144322, 288644, 360805, 721610, 1371059, 1443220, 2742118, 5484236, 6855295, 13710590, 26050121, 27421180, 52100242, 104200484, 130250605, 260501210, 521002420]

約数ペア:

[(1, 521002420), (2, 260501210), (4, 130250605), (5, 104200484), (10, 52100242), (19, 27421180), (20, 26050121), (38, 13710590), (76, 6855295), (95, 5484236), (190, 2742118), (361, 1443220), (380, 1371059), (722, 721610), (1444, 360805), (1805, 288644), (3610, 144322), (7220, 72161)]