20039800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9109}}^1$

素因数の和:9136

約数の個数: 48

約数和(自身を含む): 50833800

約数和(自身を除く): 30794000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9109, 18218, 36436, 45545, 72872, 91090, 100199, 182180, 200398, 227725, 364360, 400796, 455450, 500995, 801592, 910900, 1001990, 1821800, 2003980, 2504975, 4007960, 5009950, 10019900, 20039800]

約数ペア:

[(1, 20039800), (2, 10019900), (4, 5009950), (5, 4007960), (8, 2504975), (10, 2003980), (11, 1821800), (20, 1001990), (22, 910900), (25, 801592), (40, 500995), (44, 455450), (50, 400796), (55, 364360), (88, 227725), (100, 200398), (110, 182180), (200, 100199), (220, 91090), (275, 72872), (440, 45545), (550, 36436), (1100, 18218), (2200, 9109)]