163217720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99523}}^1$

素因数の和:99575

約数の個数: 32

約数和(自身を含む): 376200720

約数和(自身を除く): 212983000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 99523, 199046, 398092, 497615, 796184, 995230, 1990460, 3980920, 4080443, 8160886, 16321772, 20402215, 32643544, 40804430, 81608860, 163217720]

約数ペア:

[(1, 163217720), (2, 81608860), (4, 40804430), (5, 32643544), (8, 20402215), (10, 16321772), (20, 8160886), (40, 4080443), (41, 3980920), (82, 1990460), (164, 995230), (205, 796184), (328, 497615), (410, 398092), (820, 199046), (1640, 99523)]