20480005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 33546240

約数和(自身を除く): 13066235

約数列:

[1, 5, 7, 13, 19, 23, 35, 65, 91, 95, 103, 115, 133, 161, 247, 299, 437, 455, 515, 665, 721, 805, 1235, 1339, 1495, 1729, 1957, 2093, 2185, 2369, 3059, 3605, 5681, 6695, 8645, 9373, 9785, 10465, 11845, 13699, 15295, 16583, 25441, 28405, 30797, 39767, 45011, 46865, 68495, 82915, 127205, 153985, 178087, 198835, 215579, 225055, 315077, 585143, 890435, 1077895, 1575385, 2925715, 4096001, 20480005]

約数ペア:

[(1, 20480005), (5, 4096001), (7, 2925715), (13, 1575385), (19, 1077895), (23, 890435), (35, 585143), (65, 315077), (91, 225055), (95, 215579), (103, 198835), (115, 178087), (133, 153985), (161, 127205), (247, 82915), (299, 68495), (437, 46865), (455, 45011), (515, 39767), (665, 30797), (721, 28405), (805, 25441), (1235, 16583), (1339, 15295), (1495, 13699), (1729, 11845), (1957, 10465), (2093, 9785), (2185, 9373), (2369, 8645), (3059, 6695), (3605, 5681)]