19937268

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 108

約数和(自身を含む): 56953260

約数和(自身を除く): 37015992

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 29, 36, 39, 52, 58, 78, 87, 113, 116, 117, 156, 169, 174, 226, 234, 261, 338, 339, 348, 377, 452, 468, 507, 522, 676, 678, 754, 1014, 1017, 1044, 1131, 1356, 1469, 1508, 1521, 2028, 2034, 2262, 2938, 3042, 3277, 3393, 4068, 4407, 4524, 4901, 5876, 6084, 6554, 6786, 8814, 9802, 9831, 13108, 13221, 13572, 14703, 17628, 19097, 19604, 19662, 26442, 29406, 29493, 38194, 39324, 42601, 44109, 52884, 57291, 58812, 58986, 76388, 85202, 88218, 114582, 117972, 127803, 170404, 171873, 176436, 229164, 255606, 343746, 383409, 511212, 553813, 687492, 766818, 1107626, 1533636, 1661439, 2215252, 3322878, 4984317, 6645756, 9968634, 19937268]

約数ペア:

[(1, 19937268), (2, 9968634), (3, 6645756), (4, 4984317), (6, 3322878), (9, 2215252), (12, 1661439), (13, 1533636), (18, 1107626), (26, 766818), (29, 687492), (36, 553813), (39, 511212), (52, 383409), (58, 343746), (78, 255606), (87, 229164), (113, 176436), (116, 171873), (117, 170404), (156, 127803), (169, 117972), (174, 114582), (226, 88218), (234, 85202), (261, 76388), (338, 58986), (339, 58812), (348, 57291), (377, 52884), (452, 44109), (468, 42601), (507, 39324), (522, 38194), (676, 29493), (678, 29406), (754, 26442), (1014, 19662), (1017, 19604), (1044, 19097), (1131, 17628), (1356, 14703), (1469, 13572), (1508, 13221), (1521, 13108), (2028, 9831), (2034, 9802), (2262, 8814), (2938, 6786), (3042, 6554), (3277, 6084), (3393, 5876), (4068, 4901), (4407, 4524)]