2189777720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4211111}}^1$

素因数の和:4211135

約数の個数: 32

約数和(自身を含む): 5306001120

約数和(自身を除く): 3116223400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 4211111, 8422222, 16844444, 21055555, 33688888, 42111110, 54744443, 84222220, 109488886, 168444440, 218977772, 273722215, 437955544, 547444430, 1094888860, 2189777720]

約数ペア:

[(1, 2189777720), (2, 1094888860), (4, 547444430), (5, 437955544), (8, 273722215), (10, 218977772), (13, 168444440), (20, 109488886), (26, 84222220), (40, 54744443), (52, 42111110), (65, 33688888), (104, 21055555), (130, 16844444), (260, 8422222), (520, 4211111)]