20123795275

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{6211}}^1$

素因数の和:6400

約数の個数: 48

約数和(自身を含む): 26690479200

約数和(自身を除く): 6566683925

約数列:

[1, 5, 25, 29, 41, 109, 145, 205, 545, 725, 1025, 1189, 2725, 3161, 4469, 5945, 6211, 15805, 22345, 29725, 31055, 79025, 111725, 129601, 155275, 180119, 254651, 648005, 676999, 900595, 1273255, 3240025, 3384995, 4502975, 6366275, 7384879, 16924975, 19632971, 27756959, 36924395, 98164855, 138784795, 184621975, 490824275, 693923975, 804951811, 4024759055, 20123795275]

約数ペア:

[(1, 20123795275), (5, 4024759055), (25, 804951811), (29, 693923975), (41, 490824275), (109, 184621975), (145, 138784795), (205, 98164855), (545, 36924395), (725, 27756959), (1025, 19632971), (1189, 16924975), (2725, 7384879), (3161, 6366275), (4469, 4502975), (5945, 3384995), (6211, 3240025), (15805, 1273255), (22345, 900595), (29725, 676999), (31055, 648005), (79025, 254651), (111725, 180119), (129601, 155275)]