254357480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{509}}^1$

素因数の和:595

約数の個数: 96

約数和(自身を含む): 638101800

約数和(自身を除く): 383744320

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, 509, 520, 620, 806, 961, 1018, 1240, 1612, 1922, 2015, 2036, 2545, 3224, 3844, 4030, 4072, 4805, 5090, 6617, 7688, 8060, 9610, 10180, 12493, 13234, 15779, 16120, 19220, 20360, 24986, 26468, 31558, 33085, 38440, 49972, 52936, 62465, 63116, 66170, 78895, 99944, 124930, 126232, 132340, 157790, 205127, 249860, 264680, 315580, 410254, 489149, 499720, 631160, 820508, 978298, 1025635, 1641016, 1956596, 2051270, 2445745, 3913192, 4102540, 4891490, 6358937, 8205080, 9782980, 12717874, 19565960, 25435748, 31794685, 50871496, 63589370, 127178740, 254357480]

約数ペア:

[(1, 254357480), (2, 127178740), (4, 63589370), (5, 50871496), (8, 31794685), (10, 25435748), (13, 19565960), (20, 12717874), (26, 9782980), (31, 8205080), (40, 6358937), (52, 4891490), (62, 4102540), (65, 3913192), (104, 2445745), (124, 2051270), (130, 1956596), (155, 1641016), (248, 1025635), (260, 978298), (310, 820508), (403, 631160), (509, 499720), (520, 489149), (620, 410254), (806, 315580), (961, 264680), (1018, 249860), (1240, 205127), (1612, 157790), (1922, 132340), (2015, 126232), (2036, 124930), (2545, 99944), (3224, 78895), (3844, 66170), (4030, 63116), (4072, 62465), (4805, 52936), (5090, 49972), (6617, 38440), (7688, 33085), (8060, 31558), (9610, 26468), (10180, 24986), (12493, 20360), (13234, 19220), (15779, 16120)]