178568740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{709}}^1$

素因数の和:989

約数の個数: 72

約数和(自身を含む): 438532920

約数和(自身を除く): 259964180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 490, 514, 709, 980, 1028, 1285, 1418, 1799, 2570, 2836, 3545, 3598, 4963, 5140, 7090, 7196, 8995, 9926, 12593, 14180, 17990, 19852, 24815, 25186, 34741, 35980, 49630, 50372, 62965, 69482, 99260, 125930, 138964, 173705, 182213, 251860, 347410, 364426, 694820, 728852, 911065, 1275491, 1822130, 2550982, 3644260, 5101964, 6377455, 8928437, 12754910, 17856874, 25509820, 35713748, 44642185, 89284370, 178568740]

約数ペア:

[(1, 178568740), (2, 89284370), (4, 44642185), (5, 35713748), (7, 25509820), (10, 17856874), (14, 12754910), (20, 8928437), (28, 6377455), (35, 5101964), (49, 3644260), (70, 2550982), (98, 1822130), (140, 1275491), (196, 911065), (245, 728852), (257, 694820), (490, 364426), (514, 347410), (709, 251860), (980, 182213), (1028, 173705), (1285, 138964), (1418, 125930), (1799, 99260), (2570, 69482), (2836, 62965), (3545, 50372), (3598, 49630), (4963, 35980), (5140, 34741), (7090, 25186), (7196, 24815), (8995, 19852), (9926, 17990), (12593, 14180)]