19870998

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{673}}^1$

素因数の和:741

約数の個数: 64

約数和(自身を含む): 49175040

約数和(自身を除く): 29304042

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 37, 38, 42, 57, 74, 111, 114, 133, 222, 259, 266, 399, 518, 673, 703, 777, 798, 1346, 1406, 1554, 2019, 2109, 4038, 4218, 4711, 4921, 9422, 9842, 12787, 14133, 14763, 24901, 25574, 28266, 29526, 38361, 49802, 74703, 76722, 89509, 149406, 174307, 179018, 268527, 348614, 473119, 522921, 537054, 946238, 1045842, 1419357, 2838714, 3311833, 6623666, 9935499, 19870998]

約数ペア:

[(1, 19870998), (2, 9935499), (3, 6623666), (6, 3311833), (7, 2838714), (14, 1419357), (19, 1045842), (21, 946238), (37, 537054), (38, 522921), (42, 473119), (57, 348614), (74, 268527), (111, 179018), (114, 174307), (133, 149406), (222, 89509), (259, 76722), (266, 74703), (399, 49802), (518, 38361), (673, 29526), (703, 28266), (777, 25574), (798, 24901), (1346, 14763), (1406, 14133), (1554, 12787), (2019, 9842), (2109, 9422), (4038, 4921), (4218, 4711)]