20528800

素因数分解:

$2^5\times 5^2\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:470

約数の個数: 72

約数和(自身を含む): 50996736

約数和(自身を除く): 30467936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 67, 80, 100, 134, 160, 200, 268, 335, 383, 400, 536, 670, 766, 800, 1072, 1340, 1532, 1675, 1915, 2144, 2680, 3064, 3350, 3830, 5360, 6128, 6700, 7660, 9575, 10720, 12256, 13400, 15320, 19150, 25661, 26800, 30640, 38300, 51322, 53600, 61280, 76600, 102644, 128305, 153200, 205288, 256610, 306400, 410576, 513220, 641525, 821152, 1026440, 1283050, 2052880, 2566100, 4105760, 5132200, 10264400, 20528800]

約数ペア:

[(1, 20528800), (2, 10264400), (4, 5132200), (5, 4105760), (8, 2566100), (10, 2052880), (16, 1283050), (20, 1026440), (25, 821152), (32, 641525), (40, 513220), (50, 410576), (67, 306400), (80, 256610), (100, 205288), (134, 153200), (160, 128305), (200, 102644), (268, 76600), (335, 61280), (383, 53600), (400, 51322), (536, 38300), (670, 30640), (766, 26800), (800, 25661), (1072, 19150), (1340, 15320), (1532, 13400), (1675, 12256), (1915, 10720), (2144, 9575), (2680, 7660), (3064, 6700), (3350, 6128), (3830, 5360)]