1220783720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{75731}}^1$

素因数の和:75786

約数の個数: 64

約数和(自身を含む): 3053514240

約数和(自身を除く): 1832730520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 75731, 151462, 302924, 378655, 605848, 757310, 984503, 1514620, 1969006, 2347661, 3029240, 3938012, 4695322, 4922515, 7876024, 9390644, 9845030, 11738305, 18781288, 19690060, 23476610, 30519593, 39380120, 46953220, 61039186, 93906440, 122078372, 152597965, 244156744, 305195930, 610391860, 1220783720]

約数ペア:

[(1, 1220783720), (2, 610391860), (4, 305195930), (5, 244156744), (8, 152597965), (10, 122078372), (13, 93906440), (20, 61039186), (26, 46953220), (31, 39380120), (40, 30519593), (52, 23476610), (62, 19690060), (65, 18781288), (104, 11738305), (124, 9845030), (130, 9390644), (155, 7876024), (248, 4922515), (260, 4695322), (310, 3938012), (403, 3029240), (520, 2347661), (620, 1969006), (806, 1514620), (1240, 984503), (1612, 757310), (2015, 605848), (3224, 378655), (4030, 302924), (8060, 151462), (16120, 75731)]