128868688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{619561}}^1$

素因数の和:619582

約数の個数: 20

約数和(自身を含む): 268889908

約数和(自身を除く): 140021220

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 619561, 1239122, 2478244, 4956488, 8054293, 9912976, 16108586, 32217172, 64434344, 128868688]

約数ペア:

[(1, 128868688), (2, 64434344), (4, 32217172), (8, 16108586), (13, 9912976), (16, 8054293), (26, 4956488), (52, 2478244), (104, 1239122), (208, 619561)]