20819200

素因数分解:

$2^8\times 5^2\times {\mathrm{3253}}^1$

素因数の和:3279

約数の個数: 54

約数和(自身を含む): 51546614

約数和(自身を除く): 30727414

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, 3253, 6400, 6506, 13012, 16265, 26024, 32530, 52048, 65060, 81325, 104096, 130120, 162650, 208192, 260240, 325300, 416384, 520480, 650600, 832768, 1040960, 1301200, 2081920, 2602400, 4163840, 5204800, 10409600, 20819200]

約数ペア:

[(1, 20819200), (2, 10409600), (4, 5204800), (5, 4163840), (8, 2602400), (10, 2081920), (16, 1301200), (20, 1040960), (25, 832768), (32, 650600), (40, 520480), (50, 416384), (64, 325300), (80, 260240), (100, 208192), (128, 162650), (160, 130120), (200, 104096), (256, 81325), (320, 65060), (400, 52048), (640, 32530), (800, 26024), (1280, 16265), (1600, 13012), (3200, 6506), (3253, 6400)]