21246810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{347}}^1$

素因数の和:527

約数の個数: 64

約数和(自身を含む): 55423872

約数和(自身を除く): 34177062

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 157, 195, 314, 347, 390, 471, 694, 785, 942, 1041, 1570, 1735, 2041, 2082, 2355, 3470, 4082, 4511, 4710, 5205, 6123, 9022, 10205, 10410, 12246, 13533, 20410, 22555, 27066, 30615, 45110, 54479, 61230, 67665, 108958, 135330, 163437, 272395, 326874, 544790, 708227, 817185, 1416454, 1634370, 2124681, 3541135, 4249362, 7082270, 10623405, 21246810]

約数ペア:

[(1, 21246810), (2, 10623405), (3, 7082270), (5, 4249362), (6, 3541135), (10, 2124681), (13, 1634370), (15, 1416454), (26, 817185), (30, 708227), (39, 544790), (65, 326874), (78, 272395), (130, 163437), (157, 135330), (195, 108958), (314, 67665), (347, 61230), (390, 54479), (471, 45110), (694, 30615), (785, 27066), (942, 22555), (1041, 20410), (1570, 13533), (1735, 12246), (2041, 10410), (2082, 10205), (2355, 9022), (3470, 6123), (4082, 5205), (4511, 4710)]