161881349

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 210124800

約数和(自身を除く): 48243451

約数列:

[1, 7, 19, 31, 49, 71, 79, 133, 217, 497, 553, 589, 931, 1349, 1501, 1519, 2201, 2449, 3479, 3871, 4123, 5609, 9443, 10507, 15407, 17143, 28861, 39263, 41819, 46531, 66101, 73549, 106571, 107849, 120001, 173879, 274841, 292733, 325717, 745997, 1217153, 2049131, 2280019, 3303701, 5221979, 8520071, 23125907, 161881349]

約数ペア:

[(1, 161881349), (7, 23125907), (19, 8520071), (31, 5221979), (49, 3303701), (71, 2280019), (79, 2049131), (133, 1217153), (217, 745997), (497, 325717), (553, 292733), (589, 274841), (931, 173879), (1349, 120001), (1501, 107849), (1519, 106571), (2201, 73549), (2449, 66101), (3479, 46531), (3871, 41819), (4123, 39263), (5609, 28861), (9443, 17143), (10507, 15407)]