81396

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:53

約数の個数: 72

約数和(自身を含む): 262080

約数和(自身を除く): 180684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 19, 21, 28, 34, 36, 38, 42, 51, 57, 63, 68, 76, 84, 102, 114, 119, 126, 133, 153, 171, 204, 228, 238, 252, 266, 306, 323, 342, 357, 399, 476, 532, 612, 646, 684, 714, 798, 969, 1071, 1197, 1292, 1428, 1596, 1938, 2142, 2261, 2394, 2907, 3876, 4284, 4522, 4788, 5814, 6783, 9044, 11628, 13566, 20349, 27132, 40698, 81396]

約数ペア:

[(1, 81396), (2, 40698), (3, 27132), (4, 20349), (6, 13566), (7, 11628), (9, 9044), (12, 6783), (14, 5814), (17, 4788), (18, 4522), (19, 4284), (21, 3876), (28, 2907), (34, 2394), (36, 2261), (38, 2142), (42, 1938), (51, 1596), (57, 1428), (63, 1292), (68, 1197), (76, 1071), (84, 969), (102, 798), (114, 714), (119, 684), (126, 646), (133, 612), (153, 532), (171, 476), (204, 399), (228, 357), (238, 342), (252, 323), (266, 306)]