81305028

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{16981}}^1$

素因数の和:17017

約数の個数: 72

約数和(自身を含む): 247257920

約数和(自身を除く): 165952892

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4788, 16981, 33962, 50943, 67924, 101886, 118867, 152829, 203772, 237734, 305658, 322639, 356601, 475468, 611316, 645278, 713202, 967917, 1069803, 1290556, 1426404, 1935834, 2139606, 2258473, 2903751, 3871668, 4279212, 4516946, 5807502, 6775419, 9033892, 11615004, 13550838, 20326257, 27101676, 40652514, 81305028]

約数ペア:

[(1, 81305028), (2, 40652514), (3, 27101676), (4, 20326257), (6, 13550838), (7, 11615004), (9, 9033892), (12, 6775419), (14, 5807502), (18, 4516946), (19, 4279212), (21, 3871668), (28, 2903751), (36, 2258473), (38, 2139606), (42, 1935834), (57, 1426404), (63, 1290556), (76, 1069803), (84, 967917), (114, 713202), (126, 645278), (133, 611316), (171, 475468), (228, 356601), (252, 322639), (266, 305658), (342, 237734), (399, 203772), (532, 152829), (684, 118867), (798, 101886), (1197, 67924), (1596, 50943), (2394, 33962), (4788, 16981)]