20620520

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6211}}^1$

素因数の和:6305

約数の個数: 32

約数和(自身を含む): 46962720

約数和(自身を除く): 26342200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6211, 12422, 24844, 31055, 49688, 62110, 124220, 248440, 515513, 1031026, 2062052, 2577565, 4124104, 5155130, 10310260, 20620520]

約数ペア:

[(1, 20620520), (2, 10310260), (4, 5155130), (5, 4124104), (8, 2577565), (10, 2062052), (20, 1031026), (40, 515513), (83, 248440), (166, 124220), (332, 62110), (415, 49688), (664, 31055), (830, 24844), (1660, 12422), (3320, 6211)]