19727888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 80

約数和(自身を含む): 43590960

約数和(自身を除く): 23863072

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 41, 58, 61, 68, 82, 116, 122, 136, 164, 232, 244, 272, 328, 464, 488, 493, 656, 697, 976, 986, 1037, 1189, 1394, 1769, 1972, 2074, 2378, 2501, 2788, 3538, 3944, 4148, 4756, 5002, 5576, 7076, 7888, 8296, 9512, 10004, 11152, 14152, 16592, 19024, 20008, 20213, 28304, 30073, 40016, 40426, 42517, 60146, 72529, 80852, 85034, 120292, 145058, 161704, 170068, 240584, 290116, 323408, 340136, 481168, 580232, 680272, 1160464, 1232993, 2465986, 4931972, 9863944, 19727888]

約数ペア:

[(1, 19727888), (2, 9863944), (4, 4931972), (8, 2465986), (16, 1232993), (17, 1160464), (29, 680272), (34, 580232), (41, 481168), (58, 340136), (61, 323408), (68, 290116), (82, 240584), (116, 170068), (122, 161704), (136, 145058), (164, 120292), (232, 85034), (244, 80852), (272, 72529), (328, 60146), (464, 42517), (488, 40426), (493, 40016), (656, 30073), (697, 28304), (976, 20213), (986, 20008), (1037, 19024), (1189, 16592), (1394, 14152), (1769, 11152), (1972, 10004), (2074, 9512), (2378, 8296), (2501, 7888), (2788, 7076), (3538, 5576), (3944, 5002), (4148, 4756)]