138630400

素因数分解:

$2^8\times 5^2\times {\mathrm{21661}}^1$

素因数の和:21687

約数の個数: 54

約数和(自身を含む): 343147742

約数和(自身を除く): 204517342

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 21661, 43322, 86644, 108305, 173288, 216610, 346576, 433220, 541525, 693152, 866440, 1083050, 1386304, 1732880, 2166100, 2772608, 3465760, 4332200, 5545216, 6931520, 8664400, 13863040, 17328800, 27726080, 34657600, 69315200, 138630400]

約数ペア:

[(1, 138630400), (2, 69315200), (4, 34657600), (5, 27726080), (8, 17328800), (10, 13863040), (16, 8664400), (20, 6931520), (25, 5545216), (32, 4332200), (40, 3465760), (50, 2772608), (64, 2166100), (80, 1732880), (100, 1386304), (128, 1083050), (160, 866440), (200, 693152), (256, 541525), (320, 433220), (400, 346576), (640, 216610), (800, 173288), (1280, 108305), (1600, 86644), (3200, 43322), (6400, 21661)]