21664000

素因数分解:

$2^8\times 5^3\times {\mathrm{677}}^1$

素因数の和:708

約数の個数: 72

約数和(自身を含む): 54047448

約数和(自身を除く): 32383448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 677, 800, 1000, 1280, 1354, 1600, 2000, 2708, 3200, 3385, 4000, 5416, 6400, 6770, 8000, 10832, 13540, 16000, 16925, 21664, 27080, 32000, 33850, 43328, 54160, 67700, 84625, 86656, 108320, 135400, 169250, 173312, 216640, 270800, 338500, 433280, 541600, 677000, 866560, 1083200, 1354000, 2166400, 2708000, 4332800, 5416000, 10832000, 21664000]

約数ペア:

[(1, 21664000), (2, 10832000), (4, 5416000), (5, 4332800), (8, 2708000), (10, 2166400), (16, 1354000), (20, 1083200), (25, 866560), (32, 677000), (40, 541600), (50, 433280), (64, 338500), (80, 270800), (100, 216640), (125, 173312), (128, 169250), (160, 135400), (200, 108320), (250, 86656), (256, 84625), (320, 67700), (400, 54160), (500, 43328), (640, 33850), (677, 32000), (800, 27080), (1000, 21664), (1280, 16925), (1354, 16000), (1600, 13540), (2000, 10832), (2708, 8000), (3200, 6770), (3385, 6400), (4000, 5416)]