638014716

素因数分解:

$2^2\times 3^2\times {\mathrm{157}}^2\times {\mathrm{719}}^1$

素因数の和:1043

約数の個数: 54

約数和(自身を含む): 1625354640

約数和(自身を除く): 987339924

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 157, 314, 471, 628, 719, 942, 1413, 1438, 1884, 2157, 2826, 2876, 4314, 5652, 6471, 8628, 12942, 24649, 25884, 49298, 73947, 98596, 112883, 147894, 221841, 225766, 295788, 338649, 443682, 451532, 677298, 887364, 1015947, 1354596, 2031894, 4063788, 17722631, 35445262, 53167893, 70890524, 106335786, 159503679, 212671572, 319007358, 638014716]

約数ペア:

[(1, 638014716), (2, 319007358), (3, 212671572), (4, 159503679), (6, 106335786), (9, 70890524), (12, 53167893), (18, 35445262), (36, 17722631), (157, 4063788), (314, 2031894), (471, 1354596), (628, 1015947), (719, 887364), (942, 677298), (1413, 451532), (1438, 443682), (1884, 338649), (2157, 295788), (2826, 225766), (2876, 221841), (4314, 147894), (5652, 112883), (6471, 98596), (8628, 73947), (12942, 49298), (24649, 25884)]