21316518

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 49049520

約数和(自身を除く): 27733002

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 157, 171, 314, 342, 397, 471, 794, 942, 1191, 1413, 2382, 2826, 2983, 3573, 5966, 7146, 7543, 8949, 15086, 17898, 22629, 26847, 45258, 53694, 62329, 67887, 124658, 135774, 186987, 373974, 560961, 1121922, 1184251, 2368502, 3552753, 7105506, 10658259, 21316518]

約数ペア:

[(1, 21316518), (2, 10658259), (3, 7105506), (6, 3552753), (9, 2368502), (18, 1184251), (19, 1121922), (38, 560961), (57, 373974), (114, 186987), (157, 135774), (171, 124658), (314, 67887), (342, 62329), (397, 53694), (471, 45258), (794, 26847), (942, 22629), (1191, 17898), (1413, 15086), (2382, 8949), (2826, 7543), (2983, 7146), (3573, 5966)]