3281920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{641}}^1$

素因数の和:666

約数の個数: 44

約数和(自身を含む): 7885044

約数和(自身を除く): 4603124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 641, 1024, 1280, 1282, 2560, 2564, 3205, 5120, 5128, 6410, 10256, 12820, 20512, 25640, 41024, 51280, 82048, 102560, 164096, 205120, 328192, 410240, 656384, 820480, 1640960, 3281920]

約数ペア:

[(1, 3281920), (2, 1640960), (4, 820480), (5, 656384), (8, 410240), (10, 328192), (16, 205120), (20, 164096), (32, 102560), (40, 82048), (64, 51280), (80, 41024), (128, 25640), (160, 20512), (256, 12820), (320, 10256), (512, 6410), (640, 5128), (641, 5120), (1024, 3205), (1280, 2564), (1282, 2560)]