128090620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{2237}}^1$

素因数の和:2662

約数の個数: 48

約数和(自身を含む): 308306880

約数和(自身を除く): 180216260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 409, 818, 1636, 2045, 2237, 2863, 4090, 4474, 5726, 8180, 8948, 11185, 11452, 14315, 15659, 22370, 28630, 31318, 44740, 57260, 62636, 78295, 156590, 313180, 914933, 1829866, 3659732, 4574665, 6404531, 9149330, 12809062, 18298660, 25618124, 32022655, 64045310, 128090620]

約数ペア:

[(1, 128090620), (2, 64045310), (4, 32022655), (5, 25618124), (7, 18298660), (10, 12809062), (14, 9149330), (20, 6404531), (28, 4574665), (35, 3659732), (70, 1829866), (140, 914933), (409, 313180), (818, 156590), (1636, 78295), (2045, 62636), (2237, 57260), (2863, 44740), (4090, 31318), (4474, 28630), (5726, 22370), (8180, 15659), (8948, 14315), (11185, 11452)]