20394800

素因数分解:

$2^4\times 5^2\times {\mathrm{67}}^1\times {\mathrm{761}}^1$

素因数の和:846

約数の個数: 60

約数和(自身を含む): 49795176

約数和(自身を除く): 29400376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 67, 80, 100, 134, 200, 268, 335, 400, 536, 670, 761, 1072, 1340, 1522, 1675, 2680, 3044, 3350, 3805, 5360, 6088, 6700, 7610, 12176, 13400, 15220, 19025, 26800, 30440, 38050, 50987, 60880, 76100, 101974, 152200, 203948, 254935, 304400, 407896, 509870, 815792, 1019740, 1274675, 2039480, 2549350, 4078960, 5098700, 10197400, 20394800]

約数ペア:

[(1, 20394800), (2, 10197400), (4, 5098700), (5, 4078960), (8, 2549350), (10, 2039480), (16, 1274675), (20, 1019740), (25, 815792), (40, 509870), (50, 407896), (67, 304400), (80, 254935), (100, 203948), (134, 152200), (200, 101974), (268, 76100), (335, 60880), (400, 50987), (536, 38050), (670, 30440), (761, 26800), (1072, 19025), (1340, 15220), (1522, 13400), (1675, 12176), (2680, 7610), (3044, 6700), (3350, 6088), (3805, 5360)]