291235580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{104761}}^1$

素因数の和:104909

約数の個数: 24

約数和(自身を含む): 616000560

約数和(自身を除く): 324764980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 104761, 209522, 419044, 523805, 1047610, 2095220, 14561779, 29123558, 58247116, 72808895, 145617790, 291235580]

約数ペア:

[(1, 291235580), (2, 145617790), (4, 72808895), (5, 58247116), (10, 29123558), (20, 14561779), (139, 2095220), (278, 1047610), (556, 523805), (695, 419044), (1390, 209522), (2780, 104761)]