172712500

素因数分解:

$2^2\times 5^5\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 388147032

約数和(自身を除く): 215434532

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 337, 410, 500, 625, 674, 820, 1025, 1250, 1348, 1685, 2050, 2500, 3125, 3370, 4100, 5125, 6250, 6740, 8425, 10250, 12500, 13817, 16850, 20500, 25625, 27634, 33700, 42125, 51250, 55268, 69085, 84250, 102500, 128125, 138170, 168500, 210625, 256250, 276340, 345425, 421250, 512500, 690850, 842500, 1053125, 1381700, 1727125, 2106250, 3454250, 4212500, 6908500, 8635625, 17271250, 34542500, 43178125, 86356250, 172712500]

約数ペア:

[(1, 172712500), (2, 86356250), (4, 43178125), (5, 34542500), (10, 17271250), (20, 8635625), (25, 6908500), (41, 4212500), (50, 3454250), (82, 2106250), (100, 1727125), (125, 1381700), (164, 1053125), (205, 842500), (250, 690850), (337, 512500), (410, 421250), (500, 345425), (625, 276340), (674, 256250), (820, 210625), (1025, 168500), (1250, 138170), (1348, 128125), (1685, 102500), (2050, 84250), (2500, 69085), (3125, 55268), (3370, 51250), (4100, 42125), (5125, 33700), (6250, 27634), (6740, 25625), (8425, 20500), (10250, 16850), (12500, 13817)]