81965905

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{233}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 124225920

約数和(自身を除く): 42260015

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 233, 437, 529, 665, 805, 1165, 1631, 2185, 2645, 3059, 3703, 4427, 5359, 8155, 10051, 15295, 18515, 22135, 26795, 30989, 37513, 50255, 70357, 101821, 123257, 154945, 187565, 351785, 509105, 616285, 712747, 862799, 2341883, 3563735, 4313995, 11709415, 16393181, 81965905]

約数ペア:

[(1, 81965905), (5, 16393181), (7, 11709415), (19, 4313995), (23, 3563735), (35, 2341883), (95, 862799), (115, 712747), (133, 616285), (161, 509105), (233, 351785), (437, 187565), (529, 154945), (665, 123257), (805, 101821), (1165, 70357), (1631, 50255), (2185, 37513), (2645, 30989), (3059, 26795), (3703, 22135), (4427, 18515), (5359, 15295), (8155, 10051)]