20124884075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1\times {\mathrm{641}}^1$

素因数の和:1248

約数の個数: 48

約数和(自身を含む): 26539715040

約数和(自身を除く): 6414830965

約数列:

[1, 5, 19, 25, 95, 157, 421, 475, 641, 785, 2105, 2983, 3205, 3925, 7999, 10525, 12179, 14915, 16025, 39995, 60895, 66097, 74575, 100637, 199975, 269861, 304475, 330485, 503185, 1255843, 1349305, 1652425, 1912103, 2515925, 5127359, 6279215, 6746525, 9560515, 25636795, 31396075, 42368177, 47802575, 128183975, 211840885, 804995363, 1059204425, 4024976815, 20124884075]

約数ペア:

[(1, 20124884075), (5, 4024976815), (19, 1059204425), (25, 804995363), (95, 211840885), (157, 128183975), (421, 47802575), (475, 42368177), (641, 31396075), (785, 25636795), (2105, 9560515), (2983, 6746525), (3205, 6279215), (3925, 5127359), (7999, 2515925), (10525, 1912103), (12179, 1652425), (14915, 1349305), (16025, 1255843), (39995, 503185), (60895, 330485), (66097, 304475), (74575, 269861), (100637, 199975)]