2019979775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{13331}}^1$

素因数の和:13400

約数の個数: 48

約数和(自身を含む): 2975702400

約数和(自身を除く): 955722625

約数列:

[1, 5, 11, 19, 25, 29, 55, 95, 145, 209, 275, 319, 475, 551, 725, 1045, 1595, 2755, 5225, 6061, 7975, 13331, 13775, 30305, 66655, 146641, 151525, 253289, 333275, 386599, 733205, 1266445, 1932995, 2786179, 3666025, 4252589, 6332225, 7345381, 9664975, 13930895, 21262945, 36726905, 69654475, 80799191, 106314725, 183634525, 403995955, 2019979775]

約数ペア:

[(1, 2019979775), (5, 403995955), (11, 183634525), (19, 106314725), (25, 80799191), (29, 69654475), (55, 36726905), (95, 21262945), (145, 13930895), (209, 9664975), (275, 7345381), (319, 6332225), (475, 4252589), (551, 3666025), (725, 2786179), (1045, 1932995), (1595, 1266445), (2755, 733205), (5225, 386599), (6061, 333275), (7975, 253289), (13331, 151525), (13775, 146641), (30305, 66655)]