319281920

素因数分解:

$2^8\times 5^1\times {\mathrm{249439}}^1$

素因数の和:249460

約数の個数: 36

約数和(自身を含む): 764783040

約数和(自身を除く): 445501120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 249439, 498878, 997756, 1247195, 1995512, 2494390, 3991024, 4988780, 7982048, 9977560, 15964096, 19955120, 31928192, 39910240, 63856384, 79820480, 159640960, 319281920]

約数ペア:

[(1, 319281920), (2, 159640960), (4, 79820480), (5, 63856384), (8, 39910240), (10, 31928192), (16, 19955120), (20, 15964096), (32, 9977560), (40, 7982048), (64, 4988780), (80, 3991024), (128, 2494390), (160, 1995512), (256, 1247195), (320, 997756), (640, 498878), (1280, 249439)]