20452887

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 39053664

約数和(自身を除く): 18600777

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 113, 117, 119, 153, 169, 221, 273, 339, 357, 507, 663, 791, 819, 1017, 1071, 1183, 1469, 1521, 1547, 1921, 1989, 2373, 2873, 3549, 4407, 4641, 5763, 7119, 8619, 10283, 10647, 13221, 13447, 13923, 17289, 19097, 20111, 24973, 25857, 30849, 40341, 57291, 60333, 74919, 92547, 121023, 133679, 171873, 174811, 180999, 224757, 324649, 401037, 524433, 973947, 1203111, 1573299, 2272543, 2921841, 6817629, 20452887]

約数ペア:

[(1, 20452887), (3, 6817629), (7, 2921841), (9, 2272543), (13, 1573299), (17, 1203111), (21, 973947), (39, 524433), (51, 401037), (63, 324649), (91, 224757), (113, 180999), (117, 174811), (119, 171873), (153, 133679), (169, 121023), (221, 92547), (273, 74919), (339, 60333), (357, 57291), (507, 40341), (663, 30849), (791, 25857), (819, 24973), (1017, 20111), (1071, 19097), (1183, 17289), (1469, 13923), (1521, 13447), (1547, 13221), (1921, 10647), (1989, 10283), (2373, 8619), (2873, 7119), (3549, 5763), (4407, 4641)]