25345880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:840

約数の個数: 64

約数和(自身を含む): 65767680

約数和(自身を除く): 40421800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 131, 140, 262, 280, 524, 655, 691, 917, 1048, 1310, 1382, 1834, 2620, 2764, 3455, 3668, 4585, 4837, 5240, 5528, 6910, 7336, 9170, 9674, 13820, 18340, 19348, 24185, 27640, 36680, 38696, 48370, 90521, 96740, 181042, 193480, 362084, 452605, 633647, 724168, 905210, 1267294, 1810420, 2534588, 3168235, 3620840, 5069176, 6336470, 12672940, 25345880]

約数ペア:

[(1, 25345880), (2, 12672940), (4, 6336470), (5, 5069176), (7, 3620840), (8, 3168235), (10, 2534588), (14, 1810420), (20, 1267294), (28, 905210), (35, 724168), (40, 633647), (56, 452605), (70, 362084), (131, 193480), (140, 181042), (262, 96740), (280, 90521), (524, 48370), (655, 38696), (691, 36680), (917, 27640), (1048, 24185), (1310, 19348), (1382, 18340), (1834, 13820), (2620, 9674), (2764, 9170), (3455, 7336), (3668, 6910), (4585, 5528), (4837, 5240)]