128909375

素因数分解:

$5^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 188987904

約数和(自身を除く): 60078529

約数列:

[1, 5, 7, 25, 35, 71, 83, 125, 175, 355, 415, 497, 581, 625, 875, 1775, 2075, 2485, 2905, 3125, 4375, 5893, 8875, 10375, 12425, 14525, 21875, 29465, 41251, 44375, 51875, 62125, 72625, 147325, 206255, 221875, 259375, 310625, 363125, 736625, 1031275, 1553125, 1815625, 3683125, 5156375, 18415625, 25781875, 128909375]

約数ペア:

[(1, 128909375), (5, 25781875), (7, 18415625), (25, 5156375), (35, 3683125), (71, 1815625), (83, 1553125), (125, 1031275), (175, 736625), (355, 363125), (415, 310625), (497, 259375), (581, 221875), (625, 206255), (875, 147325), (1775, 72625), (2075, 62125), (2485, 51875), (2905, 44375), (3125, 41251), (4375, 29465), (5893, 21875), (8875, 14525), (10375, 12425)]